>IF (VARTYPE(OLDVAL(FIELD(i))<>VARTYPE(EVALUATE(FIELD(i))) > * > * To/From .NULL. > * >ELSE > * > * Type stays the same > * > IF ISNULL(EVALUATE(FIELD(i))) OR (OLDVAL(EVALUATE(FIELD(i))==EVALUATE(FIELD(i))) > * > * same values > * > ELSE > * > * different values > * > ENDIF >ENDIF>