Forward Facing LiDAR/Range Finder Issue

When I program my Rang Finder orientation to be downward, my LiDAR works fine. However, I am trying to face it forward, but whenever I change the orientation parameter to forward (0), the LiDAR stops reading. Any thoughts on how to fix this? The LiDAR is a TF Mini.

You need to activate the RADAR screen on Mission Planner

http://ardupilot.org/dev/docs/code-overview-object-avoidance.html#reporting-to-the-ground-station