I'm trying to create a custom list button on OpportunityLineItems but I can't seem to figure out how this could be done. The idea is to select some of the line itemsand edit them together (bulk edit style). So I created a VF page using the standard controller OpportunityLineItem with an extension. The moment I pick List Buttonwhen attempting to create the button, the VF page disappears from the available choices.
Is this even doable? I've noticed that the moment I add a recordSetVar I get an error msg "List Controllers are not supported for OpportunityLineItem".
I've seen this done before :-). Is there a trick here?