*PLEASE* read my replies again.
You can *NOT* use the REPLACE function as you are trying to do there. PERIOD.
If you use REPLACE, you *MUST* give it THREE (3) (two more than one) arguments.
You are only giving it ONE argument.
An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.