Unloading Every Userform In A Workbook

Hello

I wonder if anyone can help. I have a workbook with 14 userforms. I want to make sure each userform is unloaded when the workbook is closed. How do I do this without referring to each userform by name. I have tried the following but this doesn't work:

for each uf in activeworkbook.userform
unload uf
next uf

Any help would be much appreciated

Thank you

George Clements