diff --git a/app/models/promotion.rb b/app/models/promotion.rb
index 025abd4b..482d2c3b 100644
--- a/app/models/promotion.rb
+++ b/app/models/promotion.rb
@@ -69,7 +69,7 @@ class Promotion < ApplicationRecord
        give_promotion_nett_price(same,promo_product,promo.min_qty, orderitem, sale_id)
 
      elsif promo.promo_type == Promotion::PROMO_TYPE4
-       give_promotion_nett_price(same,promo_product,promo.min_qty, orderitem, sale_id)
+       give_promotion_discount(same,promo_product,promo.min_qty, orderitem, sale_id)
      end
   end
 
@@ -138,8 +138,8 @@ class Promotion < ApplicationRecord
     sale_item.remark = type
     sale_item.qty = foc_qty * (-1)
 
-    sale_item.unit_price = item_price * (-1)
-    sale_item.taxable_price = item_price * (-1)
+    sale_item.unit_price = item_price # * (-1)
+    sale_item.taxable_price = item_price # * (-1)
     sale_item.price = foc_qty * item_price * (-1)
 
     sale_item.is_taxable = false
@@ -170,8 +170,8 @@ class Promotion < ApplicationRecord
 
     if same
       foc_qty = orderitem[1].to_i / foc_min_qty
-       item = OrderItem.find_by_item_code(orderitem[0])
-       price = item.price - promo_product.net_price
+       item = OrderItem.find_by_item_code(orderitem[0]) # need to specify with menu item instance
+       price = item.price.to_i - promo_product.net_price.to_i
        update_existing_item(foc_qty, item, sale_id, "promotion nett price", price)
     else
       foc_qty = find_second_item_qty(sale_id, promo_product.item_code)
@@ -187,13 +187,15 @@ class Promotion < ApplicationRecord
     if same
       foc_qty = orderitem[1].to_i / foc_min_qty
        item = OrderItem.find_by_item_code(orderitem[0])
-       total = orderitem[1].to_i * item.price
+      #  total = orderitem[1].to_i * item.price
+       total = item.price
        price = calculate_discount(total, promo_product.percentage)
        update_existing_item(foc_qty, item, sale_id, "promotion discount", price)
     else
       foc_qty = find_second_item_qty(sale_id, promo_product.item_code)
       item = OrderItem.find_by_item_code(promo_product.item_code)
-      total = item.price * foc_qty
+      # total = item.price * foc_qty
+      total = item.price
       price = calculate_discount(total, promo_product.percentage)
       update_existing_item(foc_qty, item, sale_id, "promotion discount", price)
     end