I'm going to "teach you to fish" by giving you the standard "please read the rules" comment. Read Section 8 Robot Rules (link below) and get your own answer. It should be obvious.
http://www.usfirst.org/uploadedFiles...%20Rev%20E.pdf
Sorry for being harsh but all teams really need to be familiar with the game and robot rules. The robot inspectors will be very appreciative of teams that go through the rules and inspection checklist to ensure compliance BEFORE shipping your robot.
You'll need to re-read Section 8 every year since changes do occur.
Russ