In Figure 1, the thickness of the surrounding film is a variable. In fact the project is to study the effect of the film thickness on the mode. Therefore this project should have a parameter for the film thickness, and the software may change it to other values during simulation.

To create a suitable parameter, follow these steps.

Step Action
1 Go to Solving >> Edit Parameters … to open the Variables and Functions dialog box.
2 In the User Variable tab, enter the name of the variable, “EtchedFilmThickness
3 In the Expression field, enter a starting value, 0.4
4 Click Add/Apply to add the parameter to the User Variables list
5 Click OK