project builder and applescript application

I use the project builder to create this applescript application. It only to run a line of code : tell application "X11" to activate

but I build and run, it doesn't run the applescript.

I thought somehow the event of the window doesn't run the script.

In what event of the window loads, the script will be run?

everything else is in default that project builder created. even the window and the menu, i didn't change a bit of those, i only added that line to the application.applescript file.

what do i need to do to make it run?

i am using Jaguar and project builder. thanks