Parameters Dialog

The Parameters dialog enables you to define the parameters of an operation, Activity or Interaction. The parameter list is reproduced in code in the order the parameters appear in the parameters list, so use the Up and Down buttons to move parameters into their required positions. Additionally, you can select the Add new to end checkbox to force new parameters to appear at the end of the list instead of the top.


Set the amount of parameter detail to display in a specific diagram using the Show Parameter Detail drop-down list on the Diagram Properties dialog. The setting applies only to the current diagram. The default is to show the type only.



Use to


Type the parameter name.


Select the data type of the parameter.

Alternatively, click on the [ ... ] button and select the element classifier to define the type.


Type an optional default value for the parameter.


Type a stereotype name, or click on the drop-down arrow and select a stereotype for the parameter.


Indicate the way a parameter is passed to a function:

  • In = By Value
  • InOut = By Reference
  • Out is passed by Reference, but only the return value is significant.


Set the parameter to const, even if passed by reference.


Type an optional alias for the parameter.

Add new to end

Place new parameters at the end of the list instead of the start.


Display the Multiplicity dialog, to specify the multiplicity of the parameters.


Type any additional notes on the parameter.

Multiplicity Dialog


Use to

Lower bound

Define a lower limit to the number of elements allowed in the collection.

Upper bound

Define an upper limit to the number of elements allowed in the collection.

Allow Duplicates

Indicate that duplicates are allowed.

Maps to the UML property isUnique, value FALSE).

Multiplicity is Ordered

Indicate that the collection is ordered.

See Also