AngularJS - ng-disabled directive acting weird - angularjs

Question

I'm using few modals in my angular project, in every modal which is a form I'm using button with ng-disabled directive and each modal has its own controller.
The issue is that when I debugging the code I can see that when I'm opening one modal the debugger run on all the ng-disabled directives in the code although it should run only on the ng-disabled function in the current modal that I use.
On each ng-disabled I run some verification function in its own controller,
like ng-disabled='somefunction()'
and somefunction() in the controller is somefunction() = x || y;
Do I miss something ?
controller:
app.controller('NewHolidayModalController', function ($scope, close, HolidaysService) {
var centerList = $scope.$parent.$$childHead.centers;
var currCenterDN = $scope.$parent.$$childHead.currentCenter.DN;
var indexOfCurrentCenter = _.indexOf(_.pluck(centerList, 'DN'), currCenterDN);
centerList[indexOfCurrentCenter].ticked = true;
var selectedDNs;
$scope.dt = k = new Date();
$scope.close = function (result) {
centerList[indexOfCurrentCenter].ticked = false;
close(result, 500);
};
$scope.conditionsForSendNewHoliday = function () {
selectedDNs = _.select(centerList, { ticked: true });
return (($scope.starttime >= $scope.endtime) || ($scope.dt < k) || (angular.isDate($scope.dt) == false) || (angular.isDate($scope.starttime) == false) || (angular.isDate($scope.endtime) == false) || ($scope.HolidayName.length == 0) || (selectedDNs.length == 0));
};
$scope.addHoliday = function () {
holiday = HolidaysService.formatDateAndTime($scope);
for (i = 0; i < selectedDNs.length; i++)
{
newHoliday = { DN: selectedDNs[i].DN, HolidayName: $scope.HolidayName, HolidayDate: holiday.Date, BeginHour: holiday.start, EndHour: holiday.end }
HolidaysService.addHoliday(newHoliday)
.success(function (data, status, headers, config) {
if ((_.select($scope.$parent.$$childHead.holidays, { BeginHour: data.BeginHour }).length == 0) && (_.select($scope.$parent.$$childHead.holidays, { EndHour: data.EndHour }).length == 0) && (_.select($scope.$parent.$$childHead.holidays, { HolidayDate: data.HolidayDate }).length == 0) && (_.select($scope.$parent.$$childHead.holidays, { EndHour: data.EndHour }).length == 0) && (_.select($scope.$parent.$$childHead.holidays, { HolidayName: data.HolidayName }).length == 0))
$scope.$parent.$$childHead.holidays.push(data);
centerList[indexOfCurrentCenter].ticked = false;
alert("holiday was created");
})
.error(function (data, status, headers, config) {
if (status == 409)
alert("Holiday " + data.HolidayName + " Cannot be created for " + data.DN + " BECAUSE OF OVERLAPPED HOLIDAYS.")
})
}
}
})
HTML:
<div class="modal fade">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" ng-click="close(false)" data-dismiss="modal" aria-hidden="true">×</button>
</div>
<div class="modal-body">
<form>
<div class="row">
<div class="col-md-8 col-md-offset-2">
<div isteven-multi-select
input-model="$parent.$$childHead.centers"
output-model="outputCenters"
button-label="Name"
item-label="Name (Route)"
tick-property="ticked"
max-labels="5" max-height="150px">
</div>
</div>
</div>
<div class="row">
<div class="col-md-8 col-md-offset-2">
<div class="form-group">
<div class="input-group date">
<input ng-model="HolidayName" type="text" placeholder="Holiday Name" class="form-control">
<span class="input-group-addon">
<span class="glyphicon glyphicon-pencil"></span>
</span>
</div>
</div>
</div>
</div>
<div ng-controller="DatepickerCtrl">
<div class="row">
<div class="col-md-8 col-md-offset-2">
<p class="input-group">
<input type="text" class="form-control" datepicker-popup="{{format}}" ng-model="$parent.dt" is-open="opened" min-date="minDate" datepicker-options="dateOptions" date-disabled="disabled(date, mode)" ng-required="true" close-text="Close" />
<span class="input-group-btn">
<button type="button" class="btn btn-default" ng-click="open($event)"><i class="glyphicon glyphicon-calendar"></i></button>
</span>
</p>
</div>
</div>
</div>
<div class="row">
<div class='col-md-8 col-md-offset-2'>
<timepicker-pop input-time="starttime" class="input-group"
show-meridian='showMeridian'>
</timepicker-pop>
</div>
</div>
<div class="row">
<div class='col-md-8 col-md-offset-2'>
<timepicker-pop input-time="endtime" class="input-group"
show-meridian='showMeridian'>
</timepicker-pop>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" ng-click="close(false)" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" ng-click="addHoliday()" class="btn btn-primary" data-dismiss="modal" ng-disabled="conditionsForSendNewHoliday()">Send</button>
</div>
</div>
</div>
Should I add the other controller and the html?