I have a custom object called Milestone, which is attached as a junction object to a custom object called Invoice and Opportunities. I'm trying to build a button on Opportunity page layout with a URL hack behind it to build and save
I'd like to populate the object's Opportunity Lookup field, but for some reason the URL isn't working. Here's the URL:
The Milestone Name populates using the Opportunity name just fine, but the lookup field doesn't populate with the Opportunity ID.
If anyone has any thoughts, please let me know!