I've defined a property that is called Replyand the document type is RichTextEditor.

I cannot get the value of Reply. This problem is only for properties that type of it is RichTextEditor!!!

How can I get the value of Rich Text Editor in Umbraco backoffice?

I've used Umbraco 7.x and ASP.NET MVC.

angular.module("umbraco").controller("Reply.controller", function ($scope, $http, $routeParams) {
    $scope.SendReply = function () {
        var contentId = $routeParams.id;
        var replyText = $("#Reply").val(); // without value ??? (type of Reply is RichTextEditor)
        var email = $("#Email").val();     // It's OK.
        var dataObj = {
            ReplyText: replyText,
            ContentId: contentId,
            Email: email,
        };
        $http.post("backoffice/Reply/ReplyToIncomingCall/ReplyMessage", dataObj).then
        (
            function (response) {
                alert("YES!");
                //TODO: 
            }
        );
    }
});