Is there anyway to increase the goal number above ten for a goal based rewards campaign?

Unfortunately, our system is not set up to go above 10.  In our experience such goals won't give you a good overall performance.  It's better to offer a less valuable reward and set it so participants will receive a reward after 3-5 actions.  To clarify, a person could reach the goal of ten over and over and receive the reward each time if you set it that way.