Cameo Simulation Toolkit: You can assign the results of simulations calculations on instances to the default values of properties of the Classes/Blocks that type the instance.
UML/SysML: MagicDraw/Cameo: WARNING: If you assign a value to a Slot for an untyped Property then assign a ValueType later it will DELETE your assigned value! Assign a type first .
InstanceSpecifications with links and Slots Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Class Diagram
Slot::definingFeature : StructuralFeature [1..1] ... The StructuralFeature that specifies the values that may be held by the Slot. Source Unified Modeling Language 2.5.1
A Slot designates that an entity modeled by an InstanceSpecification has a value or values for a specific StructuralFeature. Source OMG Systems Modeling Language (SysML) 1.6