Flash MX.....

I have two frames, there resides on the stage a button with the instance name "blabla".

First frame actionscript is.....

blabla._y = blabla._y + 1;

Second frame actionscript is........

gotoAndPlay(1);

The button slides down the screen when published, that is the desired effect.

Problem..... as soon as I add any actionscript to the button, even just two comment slashes "//", the movement stops.

I have a feeling that there is some really basic concept that is flying over my head at the moment.