From RadPHP XE2 Documentation
The Execution Script combo allows you to select which file will be run when a Run action is executed. The default is the active file, designated by <active> in the combo.
How to select the file to be executed when the Run action is executed
- Click the Execution Script combo. The available file names are listed, followed by the directory path where the file is located.
- Select the desired file name from the list