added qty updating option multi-item selector
diff --git a/erpnext/selling/sales_common.js b/erpnext/selling/sales_common.js
index 1cc643e..63ffb36 100644
--- a/erpnext/selling/sales_common.js
+++ b/erpnext/selling/sales_common.js
@@ -22,7 +22,7 @@
 	},
 
 	onload_post_render: function() {
-		cur_frm.get_field(this.fname).grid.set_multiple_add("item_code");
+		cur_frm.get_field(this.fname).grid.set_multiple_add("item_code", "qty");
 	},
 
 	setup_queries: function() {