how do I fix my motu he-man

[asmi2524101]

I have 2 1982 motu he-man action figures one that is in terrible shape but with good arms and one almost mint with a damaged right arm I want to swap out the bad arm for the good arm would anyone by chance know how to do that without breaking it any help would be greatly appreciated

[sharpfork]

Boil them in hot water until soft and pop them off and swap them