In a criminal case where:
(1) The defendant has been convicted of robbery in the first degree or robbery in the second degree; and
(2) There has been a special allegation pleaded and proven beyond a reasonable doubt that the defendant committed a robbery of a pharmacy as defined in *RCW 18.64.011(21);
the court shall make a finding of fact of the special allegation, or if a jury is had, the jury shall, if it finds the defendant guilty, also find a special verdict as to the special allegation.