diff --git a/modules/cragr/pages.py b/modules/cragr/pages.py
index 5cd363d0e240c379dc71f1ea5d9bd8afb3f1dbb5..a6cfa14b756ed2d5e887c3e5e9455260c9b9a84a 100644
--- a/modules/cragr/pages.py
+++ b/modules/cragr/pages.py
@@ -725,6 +725,12 @@ def obj_quantity(self):
                     return Eval(float_to_decimal, quantity)(self)
                 return NotAvailable
 
+            def obj_diff(self):
+                diff = Dict('mtpmvspt', default=None)(self)
+                if diff is not None:
+                    return Eval(float_to_decimal, diff)(self)
+                return NotAvailable
+
             def obj_code(self):
                 code = Dict('cdsptisn')(self)
                 if is_isin_valid(code):