AngularJs : Custom Directive Scope is Undefined - angularjs

Question

I want to put the value from the other controller to my custom directive , but the value in the watch function in the directive is coming undefined .Here is my code :
directive code :
function associates($templateCache,$compile) {
var directive = {};
directive.restrict = 'E';
directive.controller = 'associatesTypeaheadController';
directive.controllerAs = 'ctrlTA';
directive.template = $templateCache.get('typeahead.template.html');
directive.scope= {
"options": '='
};
directive.link=link;
return directive;
}
function link(scope, element, attrs) {
scope.$watch('options.reload', function(data){
console.log(data); //Still undefined
});
}
Controller :
employeeDetails.opts = {
"reload": false,
"refresh": false
};
employeeDetails.reload = function () {
employeeDetails.opts.reload = true;
console.log('there');
return employeeDetails.opts.reload;
};
employeeDetails.reload();

Answer 1

After lot's of struggle, i found the solution :
Directive To share between two controller:
directive.restrict = 'E';
directive.controller = 'associatesTypeaheadController';
directive.controllerAs = 'ctrlTA';
directive.template = $templateCache.get('typeahead.template.html');
directive.compile = function (element, attributes) {
var linkfunction = function ($scope) {
if ($scope.employeeDetails && $scope.employeeDetails.hint) {
$scope.hint = $scope.employeeDetails.hint;
}
if ($scope.ctrl && $scope.ctrl.hint) {
$scope.hint = $scope.ctrl.hint;
}
};
return linkfunction;
};
return directive;
}
Controller A:
employeeDetails.scope = $scope;
employeeDetails.hint = "Reports To";
Controller A HTML Scope :
<associates></associates>
Directive HTML :
<md-autocomplete
flex id="associate-typehead"
md-input-name='autocompleteField'
md-input-minlength='2' md-input-maxlength='50'
md-no-cache='ctrlTA.noCache'
md-selected-item='ctrlTA.selectedItem'
md-search-text='ctrlTA.searchText'
ng-model-options='{debounce : 1000}'
md-floating-label={{hint}}
md-items='item in ctrlTA.querySearch(ctrlTA.searchText)'
md-item-text='item.username' >
<md-item-template>
<span md-highlight-text='ctrlTA.searchText'>{{item.lastName + ', ' + item.firstName + ' (' + item.username + ')'}}</span>
</md-item-template>
</md-autocomplete>