Challenge Day - Day of the challenge

I had a touch time with this challenge. I really did not even know what to do. I finally got a code thanks to help from Mr. Bell, but it didn't work at all. it only moved forward, it didn't even count the lines. I don't really know what I could've done to make my robot better because I never could understand how to even program my robot for this challenge. Hopefully I will do better on the next challenge.