Setting physical bones joint type not working right

[elder oyster]

So what ive done is each physical bone able to take damage. When It takes enough damage physicals are activated and falls off.

I cannot change the type of the joint type to none from others but can do none to pin. 0->1 but not 1->0

I want it so that when the enemy dies its in pin but if a limb loses enough health it falls off set to none.

Also for some reason using custom var bone_name removes all collision not a big deal but it drove me insane.

Also it does register it was changed but doesnt actualy make the change