Rewind and forward button navigation problem

Hi guys,

I’m using CS4 with AS3 and have a little problem with my rewind and forward buttons. For the play and stop buttons it works fine with this script:

playButton.addEventListener (MouseEvent.CLICK, playButtonClick);

function playButtonClick (e:MouseEvent):void
{
play();

}

But then I tried this for the forward button:

forwardButton.addEventListener(MouseEvent.CLICK, forwardButtonClick);

function forwardButtonClick (e:MouseEvent):void
{
this.gotoAndPlay(this.currentframe + 50);

}

I get error messages.

All I need is to rewind and forward the movie about 50 frames and keep playing without stopping.

Any help would be appreciated,

thanks