Arrow Flag question

[zcfan27330]

I have a room where you need to shoot an arrow to open a shutter. I put the arrow flag on the point I want to be shot. What else do I need to do?

[zcfan27330]

I have a room where you need to shoot an arrow to open a shutter. I put the arrow flag on the point I want to be shot. What else do I need to do?