>I'm curious why the following give me an "Operator/operand type mismatch" error:
>
>cse_closed="CLOSED"$UPPER(currentCaseStatus)
>
>cse_closed is a logical field in the currently selected table.
>currentCaseStatus is a character field in the currently selected table.
>
>
>AND:
>
>"CLOSED"$UPPER(currentCaseStatus)=cse_closed
>
>does NOT give me an error, but returns a logical value.
>
>Thanks, J
Because you can't assign a value to a field with [=] you must REPLACE it.

This should work

IF cse_closed = "CLOSED"$UPPER(currentCaseStatus)
   ...

This sholld also:

lbTest = (cse_closed = "CLOSED"$UPPER(currentCaseStatus))

And this:

REPLACE cse_closed WITH "CLOSED"$UPPER(currentCaseStatus)

UPDATE: After I made tests Sergey gave you the right answer.
Damn. I always think that both parts of the equation are evaluated first and then they are compared.