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Yes, You are right.
when I call the refServiceget handle for ex1.4 I get just the columns, so I have no observations.
How I created optRef table:
optRef: refServiceHandle(`getOptionRef,`uniqueOpts)
I assumed my optRef table was correct as it passed the ex1 function test, but now I think I may have called the refServiceHandle function incorrectly and the optRef table wrong (ex1.4) as there are 0 rows.