Action script Syntax Error

[Goodwill]

Hi
I have been trying to add the following actionscript to a movie clip without any success:
on (press) {
this.startDrag() ;
}
on (release) {
this.stopDrag() ;
}
I Got the following error----
1087: Syntax error: extra characters found after end of program
I am following the tutorials from this website:
http://animation.about.com/od/flashanima...
I would be very grateful if you could help me out . Thank you very much .