Actionscript 2.0 error

Hi;

My first post in this forum... :D

on(rollOver){
DerslerMenu.play();
}

This code works on a layer (shape). But I get this error:

1087: Syntax error: extra characters found after end of program.

I have got this code from a video tutorial. Where is the problem?ü

Thanks...

Is that all of the code? it would indicate with the error message that you have extra characters at the end somewhere.