EDITED:
Now I'm trying this way
<input class="form-check-input deflog-check" type="checkbox" ngTrueValue = "1" ngFalseValue = "0" ng-value="chk_mail">
Ang getting the vahlue innangular like this
object2Edit.notificacion = Number($scope.chk_mail) + Number($scope.chk_mail)
;
but $scope.chk_mail is Nan