Angular js scope is not updating ng-model on ui

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Javascript

jQuery

AngularJs

I am calling a angularjs controller from a javascript

angular.element(document.getElementById('controllername')).scope().functionname(ID);

from ther by using a ajax call i am getting value to scope and use $scope.apply();

for first time ng-model ios binding data and refleted on UI but in second time the value is in the scope but not reflecting on UI(ng-model is not binding data)

please help me if you have any solution.

Thanks

What I have tried:

I am calling a angularjs controller from a javascript 

angular.element(document.getElementById('controllername')).scope().functionname(ID);

from ther  by using a ajax call  i am getting value to scope and use $scope.apply();

for first time ng-model ios binding data and refleted on UI but in second time the value is in the scope but not reflecting on UI(ng-model is not binding data)

please help me if you have any solution.

Thanks