WebRFC Scripting Issue - Works but not from within Personas?

I've attached the Function Module code (it works from within SAP and when called directly from a browser) and a screen shot of the RFC persona call (below)...

Annoyingly I did have it working but I changed it to output more parameters and it went over the 255char limit so I tried to split it into two separate table entries which again appeared to work when testing but not when called from Personas ... then I could get it back... D'oh!!

Blimey - I can't attach a pdf either - please ask for a copy of the function module code if required ... here is a screen shot if you can read it...

I can send the error log to anyone who is interested .... any help much sppreciated.

Thanks.

Patrick.