Inserting a destroy function which destroy a model after few runs

[Maite]

I amtrying to code my models so the user can just use then for a limite
number of runs or a limited number of period. could anyone help m
with this
Thank

 

[JE McGimpsey]

You might want to do a search of the archives using "Expire" as a
keyword:

http://groups.google.com/advanced_group_search?q=group:*excel*

However, the bottom line is that, unless you create compiled code (e.g.,
a COM add-in), there's no way to make your XL protection foolproof.