Lightbulb How to change app id in phonegap framework

Hello everyone,
i have developed an app "a b c d row puzzle" through phonegap framework.
Tried to upload it on samsung app store, but it was giving the same error i. e. "app id has used already"

on the phonegap web site its showing the app id, but there is no option to change it.
Plz can anybody tell me the way to change it?