[help] hitTest help

[Gloo pot]

how can i stop my mc falling into the area i have my hitTest??

here is the necesarey code:

//Gravity
onClipEvent (enterFrame) {
	gravity++;
	if (gravity>10) {
		gravity--;
	}
	_y += gravity;
}
//hitTest (level)
onClipEvent (enterFrame) {
	if (_root.level.hitTest(this._x+12.5, this._y+12.5, true)) {
		gravity = 0;
		this._y -= 1;
	}
}

my hero MC is 25 x 25 pixels