hit detection

i have included my code below for bullets in my game. the bullets are added to the stage when the mouse is clicked anywhere. easy enough... now the question i have is at the bottom of my shooter function. i am trying to detect when a bullet (boxr) hits my target.

it could have something to do with the bullets being generated inside that function and the target being just a movie clip on the stage with the instance name "target". im not sure. any help would be greatly appreciated.