Select a node inside the controller

[hmendezm]

So sorry. This is not an issue but I do not know where to put this kind of questions.

What I try to do is to select a specific Node in the tree using a function inside the controller so.

$scope.SelectNode = function() {
var item = _.findWhere($scope.treeData, { id : $scope.selectedNodeId } );
//And Here I need to select the node in the tree so the user knows what s/he is looking at. Samething like item.select =true.
};

I try to use $scope.treeData.jstree("select_node", $scope.selectedNodeId); but it is not working I get the error TypeError: $scope.treeData.jstree is not a function

I really need help!
Best Regards
Henry