Always trying the last entry on ldap

[Tshegofatso100]

     def search_for_login
        @login_ldap_entry ||= begin
          DeviseLdapAuthenticatable::Logger.send("LDAP search for login: #{@attribute}=#{@login}")
          filter = Net::LDAP::Filter.eq(@attribute.to_s, @login.to_s)
          ldap_entry = nil
          match_count = 0
          @ldap.search(:filter => filter) {|entry| ldap_entry = entry; match_count+=1} ## <<-- this returns the last entry if the are two entries of the same email
          op_result= @ldap.get_operation_result
          if op_result.code!=0 then
            DeviseLdapAuthenticatable::Logger.send("LDAP Error #{op_result.code}: #{op_result.message}")
          end
          DeviseLdapAuthenticatable::Logger.send("LDAP search yielded #{match_count} matches")
          ldap_entry
        end
      end

The problem that i am getting is that somethings we have more than 1 entry with the same email. This method always returns the last one. How can we choose to return the first one or try to authenticate on both entries.