Go To Portal Row Script Step Not Executing

Good Afternoon,

I have a portal set up on my iPad layout, and when the user makes a selection within the portal I would like for that portal row to jump to the top of the display in an attempt to avoid having to use the scroll bar. I have a script trigger on the appropriate field, so when the user makes a selection I capture the ActivePortalRowNumber and use the "Go to portal row" script step to scroll to the bottom, then back up to the appropriate row so it will appear at the top of the portal. The implementation works without a problem in FileMaker on my desktop, however, when using the app on the iPad it just sits there. Any ideas on where to start troubleshooting?

Thanks!

Justin