Attaching objects to different areas

I'm currently trying to update an item I made awhile back (A sword), to work as a script... The player clicks it and it either puts it in their hand or sheaths it (Puts on waist), but I can't get it to work - every time I set the new location for a new attachment area... It loses the other attachment area, and eventually the one that I just created.

What am I doing wrong here?

Most people who make these types of swords actually have 2 swords, one attached to each place, then scripted to alternately appear and disappear by turning up alpha (transparency) all the way so you only see one at a time.

Look in the script library for multi point attachment script.