Well, being lucid doesn't imply control over one's dreams, it implies awareness of being in a dream. It may have been a low level lucid where you were aware you were dreaming, but could not exert so much control.

Next time maybe just stop whatever you're doing in the dream and try to focus on becoming more in control, maybe by stating your desire out loud. I cant say I've had much practice at dream control, so if you are looking for some more tips, then I suggest PMing a Dream Guide .

Good luck dude!