如何在angularJS中将变量从一个函数传递到另一个函数?

$scope.openModal = function (page, size) {
    console.log(page); // this is working

    $uibModal.open({
        animation: true,
        templateUrl: 'app/pages/servers/newRole.html',
        size: size,
        resolve: {
            items: function () {
                return $scope.items;
            }
        }
     });
 };

 $scope.hello = function() {
     console.log(page); // need value of page from above function

     var btn = document.createElement("BUTTON");
     var t = document.createTextNode("ABC");

     btn.classList.add("btn-primary", 'btn-xs', 'btn');
     btn.appendChild(t);

     document.getElementById('Id1').appendChild(btn);
 }
$scope.openModal = function (page, size) {