Thank you for your reply.
I’ve used the latest guide and have now managed to get 3 of the 4 forms to pass data over..
Unfortunately the last one still doesn’t work and I’m at a loss as to why.
I tried 2 completely new forms to see if this would help but I can’t get it to work.
The value is a dropdown and yet the other dropdown selection passes fine.
Any help would be greatly appreciated.