I understand you need a quick modification to your yahoo store.
You haven't stated the exact feature or bug description, so I have no idea if what you need can be done. Also, I don't deal with rtml almost ever due to the constraints of the Yahoo platform not being flexible enough for most of my clients' needs, but as long as you aren't trying to do something ridiculously complex, rtml works great and I should be able to complete your task today.
Consultation is free, so please let me know what you're trying to accomplish in more detail and I'll try and help.
Dustin Johnson, BSCpE
Chief Engineer
whitehotlogic
I graduated from University of Central Florida with my Bachelor of Science in Computer Engineering in 2006, and have been the Chief Engineer of whitehotlogic since 2010.