[xmonad] would it be easy to make xmonad.prompt.directory call itself on sucess?

Hello, all is said in the subject, I use use the changeDir prompt with the autocompletion,which is already an handy feature :) I wander what I should add in XMonad/Prompt/Directory.hs to make the changeDir prompt call itself on sucess after the autocompletion.I'm not a programmer so the ideas aren't springing on my keyboard for such questions.All that I've tried result in errors in building.