I have created a form and I have a field containing a formula whereby it compares another formula total (A) to another formula total (B). 

If formula total A is bigger than formula total B, the field shows a "NO" message. If formula total A is smaller or equal to forumla total B it shows a "YES" message in the field.

I want users to only be able to submit the form it shows "YES" rather than "NO" (ie: if total A is small or equal to formula total B).

The formula totals are simple number additions of other fields

Sorry if this is confusing and any help would be amazing.

I'm very new to this by the way so be gentle!