dang it, I can't figure out how to insert an image here to help explain what I'm trying to do. I'll try English
On touched resultsHomeButton
if returnPage is null
go to "MissionChallenges.aspx" (target self)
go to returnPage (target self)
but Construct 2 shows (not valid here) next to my else. How do I get this to work? Again, the returnPage variable is returned from an AJAX call in a JSON object, & the server might return null for that variable...