I keep getting this output error code:

TypeError: Error #1123: Filter operator not supported on type class flash.display.MovieClip.
at Phoenix_fla::LaunchDeckSystem_9/showLD2()


against my AS3 code: Exhibit A
Code:
hit_Area.addEventListener(MouseEvent.MOUSE_OVER, showLD2);
hit_Area.addEventListener(MouseEvent.MOUSE_OUT, hideLD2);


function showLD2 (e:MouseEvent):void {
		LD2nd.visible = true;
		MovieClip.(parent).worpan.visible=false;
}

function hideLD2 (e:MouseEvent):void {
		LD2nd.visible = false;		
}
Exhibit B


Code:
this.addEventListener(MouseEvent.MOUSE_MOVE, showLD2);

function showLD2 (e:MouseEvent):void {
		if (mouseY >= 614){
		LD2nd.visible = true;
		}else 
		{
		LD2nd.visible = false;
		MovieClip.(parent).worpan.visible=true;
		}
}
Pretty basic coding logic it would seem, but it would only execute partially and continuously throw out a confusing output error code as seen above to which I have, close to 3 days been trying to figure out what I did wrong by exploring other approaches like in "Exhibit B" but all to no avail. I am average in my grasp and understanding of AS3. I would be grateful if someone can help show me where I'm wrong cuz this has almost made me miserable.