question: public String charge ( Properties ctx , int WindowNo , GridTab mTab , GridField mField , Object value ) { Integer C_Charge_ID = ( Integer ) value ; if ( C_Charge_ID == null || C_Charge_ID . intValue ( ) == 0 ) return "" ; if ( mTab . getValue ( "M_Product_ID" ) != null ) { mTab . setValue ( "C_Charge_ID" , null ) ; return "ChargeExclusively" ; } mTab . setValue ( "M_AttributeSetInstance_ID" , null ) ; mTab . setValue ( "S_ResourceAssignment_ID" , null ) ; mTab . setValue ( "C_UOM_ID" , new Integer ( 100 ) ) ; Env . setContext ( ctx , WindowNo , "DiscountSchema" , "N" ) ; String sql = "SELECT ChargeAmt FROM C_Charge WHERE C_Charge_ID=?" ; PreparedStatement pstmt = null ; ResultSet rs = null ; try { pstmt = DB . prepareStatement ( sql , null ) ; pstmt . setInt ( 1 , C_Charge_ID . intValue ( ) ) ; rs = pstmt . executeQuery ( ) ; if ( rs . next ( ) ) { mTab . setValue ( "PriceEntered" , rs . getBigDecimal ( 1 ) ) ; mTab . setValue ( "PriceActual" , rs . getBigDecimal ( 1 ) ) ; mTab . setValue ( "PriceLimit" , Env . ZERO ) ; mTab . setValue ( "PriceList" , Env . ZERO ) ; mTab . setValue ( "Discount" , Env . ZERO ) ; } } catch ( SQLException e ) { log . log ( Level . SEVERE , sql , e ) ; return e . getLocalizedMessage ( ) ; } finally { DB . close ( rs , pstmt ) ; rs = null ; pstmt = null ; } return tax ( ctx , WindowNo , mTab , mField , value ) ; }
target:  Order Line - Charge. - updates PriceActual from Charge - sets PriceLimit, PriceList to zero Calls tax