modal inside an ng-repeat directive causes crash

modal inside an ng-repeat directive causes crash

i am trying to put inside a table abutton that will open a modal. but no
matter which button i click it seems that it tries to open it many times.
i have put the openModal and closeModal inside the main controller. i
believe the problem might be because i am using it inside an ng-repeat?
but in any case i do not know what is going wrong. what am i doing wrong?
i am using this modal:
http://angular-ui.github.io/bootstrap/#/modal
the html code:
<div class="row">
<div class="span4" ng-repeat="court in courts">
<table class="table table-condensed table-bordered table-hover">
<caption><h4>court {{court.records[0].id}}<h4></caption>
<tr>
<th style='text-align:center'>Hour</th>
<th style='text-align:center'>Player 1</th>
<th style='text-align:center'>Player 2</th>
<th></th>
</tr>
<tr ng-repeat="record in court.records">
<td width="50" >{{record.hour}}</td>
<td ng-style="user1Payed(record)" style='text-align:center'></td>
<td ng-style="user2Payed(record)" style='text-align:center'></td>
<td> <!-- options button -->
<button class="btn" ng-click="openModal()">Open me!</button>
<div modal="shouldBeOpen" close="closeModal()" options="opts">
<div class="modal-header">
<h3>I'm a modal!</h3>
</div>
<div class="modal-body">
<ul>
<li ng-repeat="item in items">{{item}}</li>
</ul>
</div>
<div class="modal-footer">
<button class="btn btn-warning cancel"
ng-click="closeModal()">Cancel</button>
</div>
</div>
</td> <!-- options button end -->
</tr>
</table>
</div>
</div>
and the controller code:
function CourtsController($scope, $window, $http, CourtsService, $timeout) {
$scope.openModal = function () {
$scope.shouldBeOpen = true;
};
$scope.closeModal = function () {
$scope.closeMsg = 'I was closed at: ' + new Date();
$scope.shouldBeOpen = false;
};
$scope.items = [
"Guest Payment",
"Member Payment",
"League (no payment)",
"no Payment"
];
$scope.opts = {
backdropFade: true,
dialogFade:true
};