flash actionscript: this is my code. it is a frame code.

count++;
if ((count > 1) )
{
count = 1;
}
Xpos = Xpos + ((_xmouse - Xpos) / delay);
Ypos = Ypos + 3
duplicateMovieClip ("particle", "particle" add count, count);
this["particle" + count ]._x = Xpos ;
this["particle" + count ]._y = Ypos ;
this["particle" + count ].onMouseUp(Ypos = Ypos -3)

What is wrong?
please help me
//Martin

make sure count is initialized and correct your onMouseUp handler:

this["particle" + count ].onMouseUp=function(){ // i'm not sure you want to use an onMouseUp handler
Ypos = Ypos -3;
}