code: def ng_set_ctrl_property(self, element, prop, value):
          
          self.browser.execute_script(
              'angular.element(arguments[0]).controller()%s = %s;' % (
                  self.__d2b_notation(prop=prop), self.__type2js(value=value)
              ), element)
docs: :Description: Will set value of property of element's controller.
          :Warning: This will only work for angular.js 1.x.
          :Warning: Requires angular debugging to be enabled.
          :param element: Element for browser instance to target.
          :type element: WebElement
          :param prop: Property of element's angular scope to target.
          :type prop: string
          :example: 'messages.total'
          :param value: Value to specify to angular element's controller's property.
          :type value: None, bool, int, float, string