How to remove a setInterval from MC?

Hi guys,

This has been torturing me for pretty long. Let’s say I have an MC (my_mc) with a button inside (mybtn_btn). Now I make something like this:
ActionScript Code:
[FONT=Courier New][LEFT]my_mc.[COLOR=#000080]mybtn_btn[/COLOR].[COLOR=#0000FF]onRollOver[/COLOR] = [COLOR=#000000]function[/COLOR]COLOR=#000000[/COLOR][COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]_root[/COLOR].[COLOR=#000080]showBubble[/COLOR]COLOR=#000000[/COLOR];
[COLOR=#000000]}[/COLOR]

my_mc.[COLOR=#000080]mybtn_btn[/COLOR].[COLOR=#0000FF]onRollOut[/COLOR] = [COLOR=#000000]function[/COLOR]COLOR=#000000[/COLOR][COLOR=#000000]{[/COLOR]
removeBubbleInt = [COLOR=#0000FF]setInterval[/COLOR][COLOR=#000000]([/COLOR]removeBubble, [COLOR=#000080]3000[/COLOR], [COLOR=#0000FF]this[/COLOR][COLOR=#000000])[/COLOR];
[COLOR=#000000]}[/COLOR]

[COLOR=#000000]function[/COLOR] showBubbleCOLOR=#000000[/COLOR][COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]this[/COLOR].[COLOR=#0000FF]attachMovie[/COLOR][COLOR=#000000]([/COLOR][COLOR=#FF0000]“bubble”[/COLOR], [COLOR=#FF0000]“bubble_mc”[/COLOR], [COLOR=#000080]10007[/COLOR][COLOR=#000000])[/COLOR];
[COLOR=#000000]}[/COLOR]

[COLOR=#000000]function[/COLOR] removeBubbleCOLOR=#000000[/COLOR][COLOR=#000000]{[/COLOR]
[COLOR=#0000FF]clearInterval[/COLOR]COLOR=#000000[/COLOR];
[COLOR=#0000FF]trace[/COLOR]COLOR=#000000[/COLOR];
[COLOR=#0000FF]removeMovieClip[/COLOR]COLOR=#000000[/COLOR];
[COLOR=#000000]}[/COLOR]
[/LEFT]
[/FONT]

This doesn’t work, of course. The bubble is removed, but not the interval. How the heck do I remove that interval? Thanks!

Poco