angular-meteor 1.3 $meteor.object the new way - angularjs

Question

There is something I'm probably missing but I try to access a single document from my mongo collection Tribunaux reactively without $stateParams in my variable modifTrib. I got the tribunalId field when I clicked on a button. So before I click my variable is null in my controller.
Here is what I did :
angular
.module('app')
.controller('tribunauxController', tribunauxController);
tribunauxController.$inject = ['$scope', '$reactive', '$mdDialog'];
function tribunauxController($scope, $reactive, $mdDialog)
{
$reactive(this).attach($scope);
var vm = this;
vm.TribunalModify = TribunalModify;
vm.tribunalId = null;
vm.helpers({
tribunaux: () => {
return Tribunaux.find({});
}
});
vm.helpers({
modifTrib () {
return Tribunaux.findOne(tribunalId);
}
});
function TribunalModify(tribId){
vm.tribunalId = tribId;
} }
I can't get this to work.
Need a little help thanks!
UPDATE : Here is the interesting part of my HTML
<md-list-item class="md-2-line" ng-click="vm.TribunalModify(tribunal._id)"
ng-repeat="tribunal in vm.tribunaux">
<div class="md-list-item-text">
<h3>Tribunal d'instance de {{tribunal.label}}</h3>
<p>{{tribunal.address}}</p>
</div>
</md-list-item>

Answer 1

You can change 2 things:
Merge the helpers into one helpers definition (I think it's just looks nicer)
tribunalId has to be reactively in order to make the helper re-run. there are few ways of doing that (we are just discussing it here: https://github.com/Urigo/angular-meteor/issues/955) but for now, the easiest way is to use getReactively like that:
return Tribunaux.findOne(getReactively("tribunalId"));