Set the EXPRESSION field the below to print Quantity in a format such as “2 Cartons 5 Pieces”
Iif([Cartons]<>0, Iif([Cartons]<>0, Concat(Concat(FormatString('{0:#,##0.##}',[Cartons]), ' ' , Iif([Cartons]>0,'Carton','')),' ' ,
Iif([Loose]<>0, ConCat(FormatString('{0:#,##0.##}',[Quantity]) ,' ' ,
Iif([Loose]>0,[Unit],'')), ' '),''), ''),
Concat(FormatString('{0:#,##0.00}',[Quantity]) ,' ' , [Unit]))