The Action Group in the screenshot above consists of two actions:
(For information about the Action Group check box, see the section Action Groups with Action-Group Parameters.) This means that when the Action Group is called at runtime, the action group must receive values for both these parameters (see Supplying parameter values with Execute Action Group below) otherwise an error is reported.
The parameters are not marked as Optional. In the screenshot below, we have an Action Group named RectangleArea, in which we have declared two parameters named $length and $width. After a new parameter has been added, double-click to the right of the parameter's $ symbol, and enter the name of the parameter. Do this by clicking the Add Parameter icon ( see screenshot below). In the Action Group, declare the parameters that are needed to generate the required result.
Parameters in Action Groups work as follows:
