To use Creo+ parameters as Creo Simulate design variables, you must use parameters created through the Tools > Parameters command—not the Tools > Relations command.

The reason for this restriction lies with how Creo Simulate uses design variables during a design study. When it performs a design study, Creo Simulate varies the value of the selected design variables within the range you specified as you defined the study. This, in turn, changes the value of the Creo+ driving parameter.

If you define the Creo+ parameter as a variable instead of a constant, you can create situations where both Creo+ and Creo Simulate try to change the parameter. The resulting conflicts would prove undesirable for the study.

In creating the Creo+ parameters that you plan to use as design variables, take special care not to use these parameters in relations that would in any way restrict their movement in Creo Simulate. In other words, do not use these parameters on the left side of any relation equations.

To learn more about using Creo+ parameters as design variables, see Design Variables.

Return to Driven and Driving Parameters.