I am on Sugar Professional v9 on Site.
I have a custom module related to Opportunities, call it Evo.
Evo has a percentage field (an integer with max value 100).
I also want the sum of all the Evos related to an Opportunity not to exceed 100.
So I would like to, at the very least, Warn the user if the sum exceeds 100.
I tried creating a rollup field in Opportunities and have an on-change event on that field, to check the total and show a warning alert if it's over 100. But the on-change will not trigger when the formula field is updated.
Any other thoughts on how to do this?