I am having troubles with disable-action.

I want to set it to the variable.

Here is what I get when I inspect the element. The button is not disabled and I want it disabled:

<a class="btn btn-default ng-isolate-scope ng-binding" ng-click="click()" ok-action="clearEMessage()" 
disable-action="disableClearMessage" 
link-text="Clear E-Messages" cancel-label="No" ok-label="Yes" 
confirm-message="'Are you sure you want to clear all e-messages?'" 
confirm-title="Confirm Clear" ng-disabled="true">Clear E-Messages</a>

I changed the directive this way:

app.directive('confirmButton', [function() {
        return {
            restrict: 'AE',
            transclude: true,
            replace: true,
            scope: {
                linkText: '@',
                okLabel: '@',
                cancelLabel: '@?',
                confirmTitle: '@',
                confirmMessage: '=',
                onOpen: '&',
                okAction: '&',
                disableAction: '='
            },
            controller: ['$scope', '$modal', function($scope, $modal) {
                $scope.okClass = 'btn-danger';
                $scope.message = $scope.confirmMessage;
                $scope.title = $scope.confirmTitle;
                //      $scope.okLabel = $scope.okLabel;
         //       console.log('Before: ' + $scope.cancelLabel);
                $scope.cancelLabel = $scope.cancelLabel || 'Cancel';
         //       console.log('After: ' + $scope.cancelLabel);

                $scope.click = function () {
                  
                    if ($scope.onOpen) {
                        $scope.onOpen();
                    }
                    var modal = $modal.open({
                        scope: $scope,
                        templateUrl: '/app/templates/modal.html'
                    });

                    modal.result.then(function (result) {
                        $scope.okAction();
                    });
                };
            }],
            template: '<a ng-click="click()" ng-disabled=" {{ disableAction }} " >{{ linkText }}</a>'
        };
    }]);

So, now it evaluates the disableAction. The disable-action I set to the name of the variable disableClearMessage and this variable is true when I open that form. So, the button should be disabled (and ng-disabled = 'true') as you see.

However, the button is not disabled and I can click on it just fine and the click event works. It may be a minor problem since the only reason I want to disable the button if there is nothing to clear (the message is empty anyway).