No sum data with relations using reverse_node_reference module

Hi first of all thanks for this great module, very helpful, i am having a problem to make operations over content that is in a relation, it doesn't do anything, i mean, i have two different content types in a view related for a field, when i put some operations over the fields that made part of the relation it doesn't work, any help is apreciated

i am using this module to make de relations http://drupal.org/project/reverse_node_reference.