HOWTO set a ValueSpecificationAction to use the * LiteralUnlimitedNatural to drive an 'insertAt' InputPin on an AddStructuralFeatureValueAction in Cameo Simulation Toolkit and Cameo Systems Modeler

This one is very tricky. You can’t just set the value to * (no quotes) by typing it into a ValueSpecificationAction symbol; you have to use the specification dialog, and then under Value use the small right arrow to go to Value Specification > Literal Unlimited Natural (which fills in a 0 by default) then change it to * (no quotes).

For correctness one should then also set the 'result' OutputPin on the ValueSpecification and the 'insertAt' InputPin to have type UnlimitedNatural and multiplicity 1..1, but Magic Model Analyst^® (Cameo Simulation Toolkit^®) does not seem to care about that.)

Relates to

Magic Model Analyst® (Cameo Simulation Toolkit®) zone

The append(n:int) operation and its Activity method Append

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[UML-2.5.1] Adding a value to an ordered StructuralFeature requires an insertion point for the new value given in the insertAt InputPin, which is required for ordered StructuralFeatures when isReplaceAll is false and omitted for unordered StructuralFeatures.

[UML-2.5.1] If the insertAt InputPin is present, it has type UnlimitedNatural and multiplicity 1..1

[UML-2.5.1] A value of unlimited (“*”) for the insertion point means to insert the new value at the end of the sequence.

[UML-2.5.1] A LiteralUnlimitedNatural specifies a constant value of the PrimitiveType UnlimitedNatural.

[UML-2.5.1] A LiteralUnlimitedNatural is shown either as a sequence of digits or as an asterisk (*), where an asterisk denotes unlimited.

[UML-2.5.1] Note that “unlimited” denotes the lack of a limit on the value of some element (such as a multiplicity upper bound), not a value of “infinity.”