So, I've started a new project and i've come across this problem:
I have this rather simple armature composed of 4 bones:
-Rotation: which is stationary and rotates on one of the three main axes (x,y or z).
-RotationArm: child of Rotation and inherits the rotation
-RotationArmPos: child of RotationArm and only inherits the position
-Target: child of RorationArmPos and it's not connected to him
My objective is to be able to move the Target bone along the immaginary tilted axis, going through the two ends of the bone, based on the vertical translation of the RotationArmPos.