I am trying to figure out why the second IF statement is not working correctly. In my code the field tmpName.liquid contains "PCB "

If tmpName.liquid contains any of the strings "PCB", "Pyranol", or "Wecosol" I want it to execute the ELSE condition. But no matter what I try it always ends up doing the first DO CASE statement. When I watch the statement !("PCB" $ UPPER(fluid)) in the debugger it shows .F. once I get to the REPLACE statement. Why does it still step to the next line - DO CASE, instead of going to the ELSE condition. I just don't get it.

IF !EMPTY(tmpLiquid.h20) && Evaluate only if record has a KF Analysis.
   lcH20 = ALLTRIM(tmpLiquid.h20)
   REPLACE fluid WITH ALLTRIM(tmpName.liquid)
      IF !("PCB" $ UPPER(fluid)) ;
        OR !("PYRANOL" $ UPPER(fluid)) ;
        OR !("WECOSOL" $ UPPER(fluid))
          DO CASE
	    CASE 1
               Do something
            CASE 2
               Do something
            OTHERWISE
               Do something else
           ENDCASE
      ELSE

          Do other stuff 

      ENDIF
ENDIF

Thank you for your help. I'm at wits end.