# Questions / Help **URL:** https://forum.sensmetry.com/c/sysml/help/35.md [Latest](https://forum.sensmetry.com/latest.md) · [Categories](https://forum.sensmetry.com/categories.md) · [Tags](https://forum.sensmetry.com/tags.md) --- ## [Megathread: Package-level usages](https://forum.sensmetry.com/t/megathread-package-level-usages/575)
**Author:** [@Adam\_Layne](https://forum.sensmetry.com/u/Adam_Layne)\ **Replies:** 0\ **Last updated:** [September 9, 2026, 12:56am UTC](https://forum.sensmetry.com/t/megathread-package-level-usages/575 "2026-09-09T00:56:43Z")
A usage written directly in a package has no featuring type. The spec is explicit about what that means, SysML v2 7.6.1 “Definition and Usage Overview”: A usage can also be contained directly in an owning package. In t… --- ## [Useful SysML v2 Resources](https://forum.sensmetry.com/t/useful-sysml-v2-resources/419)
**Author:** [@Simas](https://forum.sensmetry.com/u/Simas)\ **Replies:** 0\ **Last updated:** [March 16, 2026, 1:33pm UTC](https://forum.sensmetry.com/t/useful-sysml-v2-resources/419 "2026-03-16T13:33:39Z")
Useful SysML v2 Resources A curated collection of useful resources for learning and working with SysML v2. Documentation OMG SysML v2 Specification - Official specification (Language & Transformation PDFs) OMG KerML Sp… --- ## [Model views from Syside CLI](https://forum.sensmetry.com/t/model-views-from-syside-cli/564)
**Author:** [@JK1](https://forum.sensmetry.com/u/JK1)\ **Replies:** 3\ **Last updated:** [August 24, 2026, 12:15pm UTC](https://forum.sensmetry.com/t/model-views-from-syside-cli/564 "2026-08-24T12:15:14Z")
Hello, I have a question about Syside’s vizualizer using CLI. I have noticed that when trying to vizualize part definitions, the created diagram is empty, so I turned the definition into the part, which had every possib… --- ## [Accessing Items via FlowEnds](https://forum.sensmetry.com/t/accessing-items-via-flowends/556)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 3\ **Last updated:** [August 18, 2026, 10:09am UTC](https://forum.sensmetry.com/t/accessing-items-via-flowends/556 "2026-08-18T10:09:35Z")
Hello! I’m trying to access the ItemUsage of each end of a FlowUsage. So far I have: flow\_ends = flow\_usage.related\_elements.collect() source\_action = flow\_ends\[0\].feature\_target target\_action = flow\_ends\[1\].feature\_… --- ## [Same name for multiple connections](https://forum.sensmetry.com/t/same-name-for-multiple-connections/552)
**Author:** [@Steven](https://forum.sensmetry.com/u/Steven)\ **Replies:** 1\ **Last updated:** [August 11, 2026, 7:23am UTC](https://forum.sensmetry.com/t/same-name-for-multiple-connections/552 "2026-08-11T07:23:12Z")
Hello there, I am trying my first steps and have some problems to get everything working. From my understanding, a port can have multiple connections to different ports. Also from my understanding, SysML2 should suppor… --- ## [Having trouble with basic attribute definition](https://forum.sensmetry.com/t/having-trouble-with-basic-attribute-definition/547)
**Author:** [@DavidHetherington](https://forum.sensmetry.com/u/DavidHetherington)\ **Replies:** 2\ **Last updated:** [August 10, 2026, 6:59pm UTC](https://forum.sensmetry.com/t/having-trouble-with-basic-attribute-definition/547 "2026-08-10T18:59:02Z")
Was actually trying to define a Boolean. When that did not work, I switched to a “Real” and copied and pasted the example directly from the SysML V2 specification “7.7.2 Attribute Definitions and Usages” Even though I im… --- ## [Unique Identifier for Modeling Elements](https://forum.sensmetry.com/t/unique-identifier-for-modeling-elements/546)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 7\ **Last updated:** [August 7, 2026, 6:14am UTC](https://forum.sensmetry.com/t/unique-identifier-for-modeling-elements/546 "2026-08-07T06:14:03Z")
Hello! Is there a unique identifier for modeling elements that is accessible via the python interface? I’m hoping to find something like a UUID. As an example: Each element in Enterprise Architect has a UUID which made… --- ## [Matrix Attributes](https://forum.sensmetry.com/t/matrix-attributes/536)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 3\ **Last updated:** [July 29, 2026, 11:25am UTC](https://forum.sensmetry.com/t/matrix-attributes/536 "2026-07-29T11:25:14Z")
Hello, Is it possible to specify a matrix as an attribute? I want to specify the attributes of an item with a 4x4 homogeneous transformation matrix. Thanks! Tom --- ## [Mechanism to structure Model and SysML Files](https://forum.sensmetry.com/t/mechanism-to-structure-model-and-sysml-files/437)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 6\ **Last updated:** [July 23, 2026, 10:58am UTC](https://forum.sensmetry.com/t/mechanism-to-structure-model-and-sysml-files/437 "2026-07-23T10:58:49Z")
Hello, What’s the best/suggested approach to structure a model? I’m attempting to structure the model with packages according to the logical architecture of the system. Simultaneously I’m attempting to have every packag… --- ## [Packages and .sysml Files](https://forum.sensmetry.com/t/packages-and-sysml-files/532)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 1\ **Last updated:** [July 21, 2026, 10:38am UTC](https://forum.sensmetry.com/t/packages-and-sysml-files/532 "2026-07-21T10:38:46Z")
Hello! I’m trying to break up the model into more granular .sysml files to have fewer lines of text per file (makes it easier to work on the model together with merge conflicts, etc.). Here’s an example of a way that is… --- ## [Separate Models in one Repository](https://forum.sensmetry.com/t/separate-models-in-one-repository/535)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 1\ **Last updated:** [July 21, 2026, 10:29am UTC](https://forum.sensmetry.com/t/separate-models-in-one-repository/535 "2026-07-21T10:29:54Z")
Hello, Is there a way to have multiple independent models in the same repository without getting warnings? As a workaround I’ve added paths to the Syside: Exclude setting, it works but it’s a little tedious when working… --- ## [Example Model of a Software Interface](https://forum.sensmetry.com/t/example-model-of-a-software-interface/525)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 2\ **Last updated:** [July 16, 2026, 7:20pm UTC](https://forum.sensmetry.com/t/example-model-of-a-software-interface/525 "2026-07-16T19:20:04Z")
Hello! Is there an example of how to model a software interface? Without a clear structure (yet), I’m thinking along the lines of roles, protocols, methods, messages and data structures, etc.. Thanks! Tom --- ## [How can I configure syside.toml for diagram routing/layout options in Syside CLI?](https://forum.sensmetry.com/t/how-can-i-configure-syside-toml-for-diagram-routing-layout-options-in-syside-cli/522)
**Author:** [@Alejandro\_Nieto](https://forum.sensmetry.com/u/Alejandro_Nieto)\ **Replies:** 2\ **Last updated:** [July 9, 2026, 4:36am UTC](https://forum.sensmetry.com/t/how-can-i-configure-syside-toml-for-diagram-routing-layout-options-in-syside-cli/522 "2026-07-09T04:36:12Z")
Hello, I am using the Syside CLI to generate SVG diagrams from a SysML v2 model, for example: syside viz element ./ \\ -n "'Model Electronics Basic'::Parts::circuit" \\ -r tree \\ -v interconnection \\ -o \_viz\_Test… --- ## ['then terminate' syntax in SysIDE](https://forum.sensmetry.com/t/then-terminate-syntax-in-syside/515)
**Author:** [@Alejandro\_Nieto](https://forum.sensmetry.com/u/Alejandro_Nieto)\ **Replies:** 2\ **Last updated:** [June 29, 2026, 9:06am UTC](https://forum.sensmetry.com/t/then-terminate-syntax-in-syside/515 "2026-06-29T09:06:59Z")
Hello everyone, I noticed a small inconsistency between the SysML v2 book/specification and SysIDE regarding the syntax for terminating an action. In the book/specification, I understand the following code snippet to b… --- ## [How to limit subsetting/redefintion](https://forum.sensmetry.com/t/how-to-limit-subsetting-redefintion/485)
**Author:** [@Marco\_Cotrotzo](https://forum.sensmetry.com/u/Marco_Cotrotzo)\ **Replies:** 2\ **Last updated:** [June 12, 2026, 3:20pm UTC](https://forum.sensmetry.com/t/how-to-limit-subsetting-redefintion/485 "2026-06-12T15:20:08Z")
Hello, I have a problem. I want to build a library where I sometimes need elements that should only be included once. The following example illustrates this: I want the user to be able to attach to “mqttcred” only, not t… --- ## [How to reference actions in if/else blocks](https://forum.sensmetry.com/t/how-to-reference-actions-in-if-else-blocks/479)
**Author:** [@Hadeel\_Q](https://forum.sensmetry.com/u/Hadeel_Q)\ **Replies:** 2\ **Last updated:** [May 29, 2026, 5:05pm UTC](https://forum.sensmetry.com/t/how-to-reference-actions-in-if-else-blocks/479 "2026-05-29T17:05:25Z")
Hello, I have a question regarding action references inside if/else blocks in a use case usage flow. For example: use case useCaseUsage { action action1 { out data; } action action2 { in data; } action ac… --- ## [ImageMetadata](https://forum.sensmetry.com/t/imagemetadata/481)
**Author:** [@Ajk](https://forum.sensmetry.com/u/Ajk)\ **Replies:** 2\ **Last updated:** [May 27, 2026, 7:09am UTC](https://forum.sensmetry.com/t/imagemetadata/481 "2026-05-27T07:09:49Z")
Hello everyone, I have been experimenting with ImageMetadata from the standard libraries, and I am currently struggling to understand what I may be doing wrong. My goal is to attach an icon or image-related metadata to … --- ## [Collections in SysML v2 (Add / Remove / Update Items)](https://forum.sensmetry.com/t/collections-in-sysml-v2-add-remove-update-items/462)
**Author:** [@Hadeel\_Q](https://forum.sensmetry.com/u/Hadeel_Q)\ **Replies:** 4\ **Last updated:** [May 20, 2026, 9:07am UTC](https://forum.sensmetry.com/t/collections-in-sysml-v2-add-remove-update-items/462 "2026-05-20T09:07:36Z")
Hello, I am currently learning SysML v2 and working on a simple example system. I have a question about how lists / collections should be modeled and handled in SysML v2. For example, in my current model I have: item… --- ## [Creating and Adding SysML elements to Model](https://forum.sensmetry.com/t/creating-and-adding-sysml-elements-to-model/464)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 5\ **Last updated:** [May 13, 2026, 2:22pm UTC](https://forum.sensmetry.com/t/creating-and-adding-sysml-elements-to-model/464 "2026-05-13T14:22:54Z")
Hello, Do you have a simple example of how one can programmatically extend the model? My model currently has part definitions and I would like to add their corresponding requirements to the model: I could generate .s… --- ## [Enum default value oddity](https://forum.sensmetry.com/t/enum-default-value-oddity/463)
**Author:** [@jasonsmith](https://forum.sensmetry.com/u/jasonsmith)\ **Replies:** 3\ **Last updated:** [May 5, 2026, 5:03pm UTC](https://forum.sensmetry.com/t/enum-default-value-oddity/463 "2026-05-05T17:03:49Z")
Greetings, ran across this nugget and thought I’d ask for clarity. When defining an attribute use typed as an enum, it is possible to assign it a default value of a String. This surprised me, I assumed that the default … --- ## [Extracting Superclassifiers](https://forum.sensmetry.com/t/extracting-superclassifiers/460)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 1\ **Last updated:** [April 30, 2026, 1:23pm UTC](https://forum.sensmetry.com/t/extracting-superclassifiers/460 "2026-04-30T13:23:43Z")
Hello! Is there an elegant way of recursively extracting all superclassifiers of an element in the model? For example: Extract all animals, mammels, cats, dogs from the following example model: abstract part def Animal… --- ## [Feedback on SysML v2 use case model from functional requirements](https://forum.sensmetry.com/t/feedback-on-sysml-v2-use-case-model-from-functional-requirements/451)
**Author:** [@Hadeel\_Q](https://forum.sensmetry.com/u/Hadeel_Q)\ **Replies:** 6\ **Last updated:** [April 24, 2026, 4:09am UTC](https://forum.sensmetry.com/t/feedback-on-sysml-v2-use-case-model-from-functional-requirements/451 "2026-04-24T04:09:36Z")
Hello, I hope you are doing well. I recently tried to model a simple system (Ticket Vending Machine) in SysML v2, starting from a set of functional requirements and converting them into a use case model using textual n… --- ## [Minimum Requirements for a Valid SysML v2 Use Case Model?](https://forum.sensmetry.com/t/minimum-requirements-for-a-valid-sysml-v2-use-case-model/444)
**Author:** [@Hadeel\_Q](https://forum.sensmetry.com/u/Hadeel_Q)\ **Replies:** 4\ **Last updated:** [April 13, 2026, 2:22pm UTC](https://forum.sensmetry.com/t/minimum-requirements-for-a-valid-sysml-v2-use-case-model/444 "2026-04-13T14:22:31Z")
Hello, I hope you are doing well. I am relatively new to SysML v2 and currently trying to learn it more deeply by building simple system model examples based on functional requirements, and representing them using use … --- ## [State Machine Transitions](https://forum.sensmetry.com/t/state-machine-transitions/376)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 6\ **Last updated:** [April 10, 2026, 1:49pm UTC](https://forum.sensmetry.com/t/state-machine-transitions/376 "2026-04-10T13:49:26Z")
Hello, I’m trying to model state machines and I’m wondering if: Is it possible to create transition between states crossing hierarchies? Can I have two transitions (in the same direction) between two states? Be… --- ## [How to navigate between connected parts with Automator?](https://forum.sensmetry.com/t/how-to-navigate-between-connected-parts-with-automator/427)
**Author:** [@Kai](https://forum.sensmetry.com/u/Kai)\ **Replies:** 1\ **Last updated:** [March 23, 2026, 1:54pm UTC](https://forum.sensmetry.com/t/how-to-navigate-between-connected-parts-with-automator/427 "2026-03-23T13:54:24Z")
Hey there, currently I am investigating some design patterns I have in mind to model relationships between software and hardware components. The point is that an application could be deployed on different hardware, with… --- ## [Extract list of features from element](https://forum.sensmetry.com/t/extract-list-of-features-from-element/426)
**Author:** [@Dat\_Nguyen](https://forum.sensmetry.com/u/Dat_Nguyen)\ **Replies:** 1\ **Last updated:** [March 23, 2026, 7:14am UTC](https://forum.sensmetry.com/t/extract-list-of-features-from-element/426 "2026-03-23T07:14:42Z")
Hi Sensmetry team, I’m currently using evaluate\_feature to compute values on a model element, for example: santa\_sleigh = find\_element\_by\_name(model, "SantaSleigh") reindeer\_count = evaluate\_feature(santa\_sleigh\["reind… --- ## [Doc elements "about" imported model elements](https://forum.sensmetry.com/t/doc-elements-about-imported-model-elements/390)
**Author:** [@sean](https://forum.sensmetry.com/u/sean)\ **Replies:** 1\ **Last updated:** [February 17, 2026, 6:59am UTC](https://forum.sensmetry.com/t/doc-elements-about-imported-model-elements/390 "2026-02-17T06:59:20Z")
Hi, This question tries to implement a library import solution given in an older post ( How to refer to external libraries? - #4 by Hormo ). I am trying to shift model documentation to a separate sysml file, as discusse… --- ## [Connecting Action Parameters to Part Port](https://forum.sensmetry.com/t/connecting-action-parameters-to-part-port/382)
**Author:** [@TomBaker](https://forum.sensmetry.com/u/TomBaker)\ **Replies:** 1\ **Last updated:** [February 6, 2026, 5:15pm UTC](https://forum.sensmetry.com/t/connecting-action-parameters-to-part-port/382 "2026-02-06T17:15:35Z")
Hello! Is it correct to bind an action parameter to the port of a part? What I’m trying to model is that the item, that is produced by the function of the system, flows over the system’s interface. Here’s an example m… --- ## [Assign values to Waypoint](https://forum.sensmetry.com/t/assign-values-to-waypoint/341)
**Author:** [@AlexP](https://forum.sensmetry.com/u/AlexP)\ **Replies:** 0\ **Last updated:** [December 18, 2025, 6:07pm UTC](https://forum.sensmetry.com/t/assign-values-to-waypoint/341 "2025-12-18T18:07:10Z")
There are many examples in Syml v2 library that use Waypoints but I haven’t been able to find a way to assign values that works, including tuple-style literals. Any help would b much appreciated. package drivecycle{ pr… --- ## [Merge of Succession Flows](https://forum.sensmetry.com/t/merge-of-succession-flows/330)
**Author:** [@GehlsenAndy](https://forum.sensmetry.com/u/GehlsenAndy)\ **Replies:** 2\ **Last updated:** [December 12, 2025, 5:26pm UTC](https://forum.sensmetry.com/t/merge-of-succession-flows/330 "2025-12-12T17:26:24Z")
I’m looking for the way to merge two flows of the out attribute from two different actions in one action – workflow. I’m trying to do this with a successor flow and a merge node. I don’t get an error in the text notation… [Next page](https://forum.sensmetry.com/c/sysml/help/35.md?page=1)