[Oliver Andrews]

Thanks for taking the time to reply Johnny.
I thought this might have been the case but was hoping there would have been a better way.
Seem pretty inefficient.
I did try a trial of Boris BCC 8 which has a beat reactor. My plan was to use the beat reactor to control the opacity of the top layer the then show/hide the bottom layer. Haven’t quite got it to work though so will go back to what you suggested.
Anyway, thank again.

Oliver