How do I remove eventListeners

programming flash
1

for (i=2; i<9; i++) {
ClassReference2=getDefinitionByName(‘b’+character2) as Class;
tempchar2 = new ClassReference2();
tempchar2.x=(i-1)*95;
tempchar2.y=280;
tempchar2.name=characterarr2[character]+i;
trace(tempchar2.name)
addChild(tempchar2);
tempchar2.addEventListener(MouseEvent.MOUSE_DOWN,draghandler);
tempchar2.addEventListener(MouseEvent.MOUSE_UP,HitTest);
}

I tried tempchar2.removeEventListene(MouseEvent.MOUSE_DOWN,draghandler);

and it won’t let me, is there a way to remove it?