I don't have a specific answer for you I'm afraid... 

My thought is that in the online help (https://online-help.sageerpx3.com/erp/12/wp-static-content/static-pages/en_US/FCT/EXPRESSIONS_CALC.htm )   I did notice this says at the bottom you can use a function in your expression, so perhaps could take a look at that to give you the text length you need for your expression criterioa?

Hi Sue,

I've done some investigating, and I think you might need to use "Instr" rather than "find".

So, I've created a new Parameter called ZSITELIST in SUP > TRI just for fun and put the value 

'GB001','GB011','GB012'

Then, in Calculator Wizard, I used AFNC.PARAMDOS to access a Folder-level Parameter value -  I've put

instr(0,func AFNC.PARAMDOS("SEED","ZSITELIST"),"GB011")

This will produce the result "10".

instr(0,func AFNC.PARAMDOS("SEED","ZSITELIST"),"GB001")  results in 2

instr(0,func AFNC.PARAMDOS("SEED","ZSITELIST"),"GB010")  results in 0

instr(0,func AFNC.PARAMDOS("SEED","ZSITELIST"),"GB012")  results in 18

I hope this works for you.

thats great I will have a go

much appreciated sue

Hi Sue, pleased to see Richard posted a solution for you, if you found it helpful, I wondered if you could click More > Verify Answer on his reply, that helps us to flag verified answers to other community memebrs, many thanks.

Andy
Sage UKI