angularjs - angular directive not listening to changes in outer scope -

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I am currently trying to listen to the instructions for changes in the parent area with a specific variable I am here. For that purpose I came up with the following code which runs the controller for the first time, but variable grid sales in the second part of $ XVI is not changing.

Any able to give me an indication that I am doing wrong here?

Controller: 

  $ scope.gridCells = []; $ Scope.gridCells.push ({value: '1'}); $ Scope.gridCells.push ({value: '2'}); $ Scope.gridCells.push ({value: '1'}); $ Scope.gridCells.push ({value: '2'}); // This change is not displayed in $ $ timeout (function () {console.log ('push'); $ scope.gridCells.push ({value: '2'}); $ scope.gridCells.push ({ Value: '1'});}, 4000);   
 HTML:  
  & lt; My Directive Cells = Grid Seals & gt; & Lt; / My-directive & gt; Director:  
  Angular Module ('myApp'). Instructions ('myDirective', [function ()) {return {restricted: 'e', ​​scope: {cells: '='}, link: function (region, element, attic) {scope.gridCells = []; Scope $ Watch (attrs.cells, function (newcomer, old value) {console.log ('new:' newvalue); console.log ('old:' + oldValue); (var i = 0; i & lt; Scope.cells.length; i ++) {// Populate some of my scope.gridCells variable If the content in the variable cells of the renewed cells (scope.cells [i] .value === '1') {gridCells.push ( Scope.cells [i]);}}})}, templates: '{{gridCells. Length}} '}}}]); Instead of  $ watch  you need to use or    
 
 
 A deep ( area. $ Watch (prop, func, true) ) is designed to be able to track the changes in the array, the attribute has been created by the  cells  cell  instead of the scope of code>  
 . $ WatchCollection ('cells', function () {// Maybe you want to reset gridclass here? //scope.gridCells = []; for (var i = 0; i & lt; scope.cells.length; I ++) {if (scope.cells [i] .value == = '1') {scope.gridCells.push (scope.cells [i]);}}});

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