Hi,

Try something along the lines of

PHP Code:
var isPaused:Boolean false;

function 
doPause(arg:Boolean):Void
{
    if (
arg)
    {
        
trace("Paused");
    }
    else
    {
        
trace("unPaused");
    }
}

var 
pListener:Object = new Object();
pListener.onKeyDown = function():Void 
{
    if (
Key.getCode() == 80)
    {
        
isPaused = !isPaused;
        
doPause(isPaused);
    }
};
Key.addListener(pListener);