{EMPMAST.CLASS} = {?Class} and (sworn, non-sworn, civilian, etc.)
If {?Active}="True" then {EMPMAST.HIDE}=true else
If {?Active}="False" then {EMPMAST.HIDE}=False and
{empmast.hired}={?daterange} and
{EMPMAST.UNIT} startswith "DEP" and (this is no longer working)
{EMPMAST.UNIT} = {?District}

 

The parameter screen looks great, but the data that appears in the report is incorrect. 

You ned to make the "if-then-if" a single evaulation in the overall selection process. In your statement, once it found an "if-then" that it could use (which would be all records because all records would be one of the 3 options) it stopped evaluating the rest of your selection criteria.

By adding () around the full if-then-if statement it will evaulate it as a single part of the criteria. I also added the somewhat bogus final else of "{EMPMAST.HIDE}={EMPMAST.HIDE}" so it won't choke on the "and" prior to the if then statement if it didn't find true or false. It may not be needed but I think it is...