The problem is whenever i drag and drop modelitem onto the part i want to rotate
the coordinates are setting to middle of the arm and its rotation doesn't depict the movement of arm in actual.
Please help me with solution.The picture shows the problem
Did you have a look to this post of Roland ?
It described solution to control rotation axis of models.
it ddn't work for me. I was not able to adjust robot arm using that script to correct position.
Can you please provide your Project?
It will help to investigate and to find a possible solution.
Thanks in advance for your help.