== operator not valid for boolean variables?

== operator not valid for boolean variables?

I have the following line in a script:
frn = Furnishing_Options [Furnished_Value == Furnished];

Guess what? It throws an error:
Error in statement at line number 1
The Left expression is of type BOOLEAN and the right expression is of type BOOLEAN And the operator == is not valid here



So I can't compare 2 boolean variables? This seems to me a serious limitation.

Regards,
George