I created bill and added some items. Some previous items is there and very easy to add, some items are new, so i need to create new one. 

- If i created new item directly from the Bill, the system required me to add purchase amount, which is not possible because my items buying price always change/dynamic. 

- If i created new item from "new item" options, it work, I can just unable "purchase amount" BUT when i came back to the bill , I can not find the newly added item, eventho i already refresh many time. 

helpppp 

thank you