Hello Larry,

Thanks for that. However, my ignorance and almost total lack of experience in OOP are a big problem here. Where in my project should the class be defined?

I've put the "define class SesParam" statement in a prg called from the main program, but I get "Class definition SesParam is not found" when I subsequently try to use use createobject("sesparam").

Any advice? Sorry for being a pain - I can see it may take a while for me to get my brain round this!

Thanks again

John