Mail Merge Conditional Set up

Still a newbie
Mac Ventura
LibreOffice 7.4.0.3

Trying to get conditional text to work in mail merge. I have the Database and tables set up. When I insert field names they work correctly. However, when I use the wizard and create a conditional text statement, if fails.

Here’s the statement:
Renew Thanks.A_MemberData.ACOrg==“S” “Sustainer” : “Other”

Result for all variations of ACOrg is Sustainer, never Other

I’ve tried bracketing the Db name and/or table name with no success. Tried EQ rather than ==

Any suggestions as to what I may be doing wrong?