RemoveChild if exists

programming flash
1

I’d like to remove a child of the display list if it exists before adding another to the stage. This gives me Error the first time I call it because ‘myMC’ doesn’t exist.


function callMc(){
 if(myMc) removeChild(myMc);
 myMc = new MyMc( newParams);
 addChild(myMc);
}

Is there a better way of doing it?