Probability Enumeration Assignment in SysML

In this tutorial, we answer a subscriber’s question:

“Is it possible to have the following: You enter a probability (e.g., 25%) in one column, and another column automatically assigns a category based on your rules:

• Low → less than 25%

• Medium → between 25% and 50% (inclusive)

• High → greater than 50%”

Yes, it’s absolutely possible in Cameo Systems Modeler using Dynamic Legends and Custom Columns powered by MetaChains. In this step-by-step walkthrough, you’ll learn how to: Create a probability property for your SysML elements. Build a custom column to calculate and display the category automatically. Apply MetaChain expressions to link properties dynamically. Use a Dynamic Legend to visually distinguish Low, Medium, and High categories directly on your diagrams. By the end, you’ll be able to automate property-driven visual indicators in your SysML model—perfect for risk analysis, system reliability assessments, and decision support.