Key.ESCAPE not working?

programming flash
1

Ok, more things happening that i don’t expect…

perhaps someone can tell me why in the following code up and down trace out, but escape does not?

$objKey.[COLOR=blue]onKeyDown[/COLOR] = [COLOR=blue]function[/COLOR](){
 **if**([COLOR=red]Key[/COLOR].[COLOR=blue]isDown[/COLOR]([COLOR=red]Key[/COLOR].[COLOR=red]ESCAPE[/COLOR])){
  [COLOR=blue]trace[/COLOR]("_Escape");
 } **else if**([COLOR=red]Key[/COLOR].[COLOR=blue]isDown[/COLOR]([COLOR=red]Key[/COLOR].[COLOR=red]UP[/COLOR])){
  [COLOR=blue]trace[/COLOR]("_Up");
 } **else if**([COLOR=#ff0000]Key[/COLOR].[COLOR=blue]isDown[/COLOR]([COLOR=red]Key[/COLOR].[COLOR=red]DOWN[/COLOR])){
  [COLOR=blue]trace[/COLOR]("_Down");
 }
}