Issue with learning how to animate objects/parts

I’m trying to find out how I can animate objects/parts/models with rigs in Moon Animator by watching tutorials but I’ve come across the error of not being able to rotate the arm I made a motor6d with. I’ve tried to move around the tool and retry the process I started in the video.

steps I took:
1.Made model and made a handle to be set as primary part.
2.In model i created I welded 2 parts in easy weld and set them unanimatable and in joint place.
3.I added the model to a blank moon animator rig and made an easy part weld that was animatable and in joint place with the handle of the model itself and the right arm of the rig.
4.I started animating but the right arm could not be animated.