Reverse bucket...
If your reverser bucket was in the down position while you had it in forward on the selector, this is why you didnt' move anywhere. Why?
You need to check your linkage. Try grabbing the bucket from the back and lifting it up and down. See if you can feel something broken.
There is a catch on the bucket so that, if the cable breaks, you can manually lift it up and the keeper will lock it till you get where your going.
If you don't see any problems in the back of the bucket, you'll need to determine if it's come lose from the control handle assembly.