visible question - flash 5

[champinoman]

i am trying to get a movie clip to change from visible to non-visible. heres the scenerio:

i have a button, a movie clip and a dynamic text box.
every time the button is pressed , variable 'a' has 1 added to it
i want the movie clip named 'b' to be visible all the time except when a=3.
the dynamic text is only to show what variable a is equal to.

this is the script i used on the movie clip (this action script is attached to the movie clip)

{if a = 3
this.visible = false
}
{if a = 4
this.visible = true
}

but when i run the movie, the movie is never visible at any value of 'a'

whats wrong?

i would apreciate any help. thanks

[vinaya]

Just have this code on your movieclip "b" which you want the visibility to change

onClipEvent (enterFrame) {
if (_root.a==3) {
this._visible = false;
} else {
this._visible = true;
}
}

if the variable a is 3 the visibility of the movieclip will be false
_root is used to refer the variables in the main time line

This should work

Regards...

[champinoman]

YOU ARE A CHAMPION, THANX