fix in depends on of stock entry
diff --git a/stock/doctype/stock_entry/stock_entry.txt b/stock/doctype/stock_entry/stock_entry.txt
index ecbd9c6..af70398 100644
--- a/stock/doctype/stock_entry/stock_entry.txt
+++ b/stock/doctype/stock_entry/stock_entry.txt
@@ -2,7 +2,7 @@
  {
   "creation": "2013-03-11 12:34:40", 
   "docstatus": 0, 
-  "modified": "2013-03-19 15:33:14", 
+  "modified": "2013-03-19 17:48:29", 
   "modified_by": "Administrator", 
   "owner": "Administrator"
  }, 
@@ -271,7 +271,7 @@
   "print_hide": 1
  }, 
  {
-  "depends_on": "eval:doc.purpose!==\"Sales Return\" || doc.purpose!===\"Purchase Return\"", 
+  "depends_on": "eval:(doc.purpose!==\"Sales Return\" || doc.purpose!==\"Purchase Return\")", 
   "doctype": "DocField", 
   "fieldname": "sb1", 
   "fieldtype": "Section Break",