Undefined custom user profile properties - javasript - rest

I'm trying to get a custom user profile property, but I only get that the property is undefined.

What I'm trying to do is to get a custom user profile property, without having to loop trough the arrays of properties.

ex from microsoft .. http://ift.tt/1CmeYXc

var userProfileProperties;

// Ensure that the SP.UserProfiles.js file is loaded before the custom code runs.
SP.SOD.executeOrDelayUntilScriptLoaded(getUserProperties, 'SP.UserProfiles.js');

function getUserProperties() {

    // Replace the placeholder value with the target user's credentials.
    var targetUser = "awesome\administrator";

    // Get the current client context and PeopleManager instance.
    var clientContext = new SP.ClientContext.get_current();
    var peopleManager = new SP.UserProfiles.PeopleManager(clientContext);

    // Specify the properties to retrieve and target user for the 
    // UserProfilePropertiesForUser object.
    var profilePropertyNames = ["PolicyAccept"];
    var userProfilePropertiesForUser =
        new SP.UserProfiles.UserProfilePropertiesForUser(
            clientContext,
            targetUser,
            profilePropertyNames);

    // Get user profile properties for the target user.
    // To get the value for only one user profile property, use the
    // getUserProfilePropertyFor method.
    userProfileProperties = peopleManager.getUserProfilePropertiesFor(
        userProfilePropertiesForUser);

    // Load the UserProfilePropertiesForUser object and send the request.
    clientContext.load(userProfilePropertiesForUser);
    clientContext.executeQueryAsync(onRequestSuccess, onRequestFail);
}

// This function runs if the executeQueryAsync call succeeds.
function onRequestSuccess() {
    var messageText = "PolicyAccept property is "
        + userProfileProperties[0];
    $('#MiddleLeftCell').prepend("<h1>" +messageText +"</h1>");
}

// This function runs if the executeQueryAsync call fails.
function onRequestFail(sender, args) {
    $('#MiddleLeftCell').prepend("<h1>Error: " + args.get_message());
}

I've got this to work, but not without having to loop trough the whole array of properties. ex:

data.d.UserProfileProperties.results.filter(function (a, b) { return a.Key == name; })[0].Value;

Every property got a key so my other question is .. isn't there a way to have a direct lookup on a custom property?

Yes I've checked if the property is there and it's visible.