I added a custom attribute picklist to the Opportunity form called New_FunnelPosition. I added an identical custom attribute picklist to the email activity form. When adding a new email activity I would like the form to obtain the value of new_FunnelPosition from the Opportunity view and default the value of the email picklist to the Opportunity value while allowing the user to choose another value. I assume this will require XML code in the on load event in the customization of the form.
I am an XML dummy and don't know how to get started. I do know other programming and think I can edit an example to fit my needs if I can get an example that is similar to what I need.