Catalog Item make attachments NON-mandatory based on variable

[xiaix]

There are a bazillion questions/posts on how to make an attachment mandatory based on a variable, but non (that I can find) to do the opposite.

I have a catalog item with this checked:

I always need an attachment on this particular item.... unless there is 1 checkbox checked.  If that checkbox is checked, then I need to make attachments NON-mandatory.

Anyone out there know how to accomplish this?

[Mike_R]

Are you open to using an Attachment variable instead? Then you can easily make it mandatory/not mandatory using a UI policy or client script.

[Planica]

Thanks, this is great