hope you understand my issue :

1. i have a balance_qty field in purchase_order_line

2. i have apperaed the number of balance_qty on tree view of product.product with a function

. but , now i wanto make it can search in tree view of product.product with the field of balance_qty i added just now.i tried with fnct_search .i but till now , is not succed ,please any one let me know how to do this !

thanks so much