Will I get in trouble at work?

My coworker wanted to cover my shift and do his shift which is open to close because he has 3 days off I had 1 and my manager (who is kind of a jerk) said that it was not okay and he couldn’t do that but then I brought it to the store director and he said it was okay if he wanted to do that. But I haven’t told my manager he said it was ok will this get me in trouble ?