how to use If condition in ionic popup

i created one common Popup screen its used in three module but three module have different title. I didn't give if condition in title, Is possible or not anybody give solution to me.

popup code here :

function showPopup () {
  $scope.data = {};
  var myPopup = $ionicPopup.show({
    template: '<input focus-me type="text" ng-model="data.expensetype" limit-char limit="15">',
    if (vm.usertype === 'Worker') {
      title: $translate.instant('{{"wtype_message" | translate}}'),
    }
    else if (vm.usertype === 'Buyer') {
      title: $translate.instant('{{"btype_message" | translate}}'),
    }
    else if (vm.usertype === 'Expense') {
      title: $translate.instant('{{"etype_message" | translate}}'),
    }
    scope: $scope,
    buttons: [
     { text: $translate.instant('{{"pcancel_message" | translate}}') },
      {
        text: $translate.instant('{{"psave_message" | translate}}'),
        type: 'button-positive',
        onTap: function (e) {
          if (!$scope.data.expensetype) {
            e.preventDefault();
          } else {
            addExpenseCategory();
            return $scope.data.expensetype;
          }
        }
      },
    ]
  });
  myPopup.then(function (res) {
    $log.log('Tapped!', res);
  });
}