this my view, I catch an error in 

`@Html.EditorFor(model => model.FacebookId)` **model is null**

But in the var `@Model`, I have my viewModel with all values

This my view:

```
@model Registration.Front.Web.Models.RegistrationViewModel
    @using Registration.Domain.Entities.Enum;
    @using Registration.Front.Web.Helpers;
    @{
        Layout = "~/Views/Shared/_Layout.cshtml";

    }
    <h2>Registration</h2>

    @using (Html.BeginForm())
    {
        @Html.AntiForgeryToken()
        @Html.ValidationSummary(true)

        <fieldset>
            @{string visibleFb = (!Model.FBParam) ? "display:none" : "display:inline";
                <div id="fb" style="@visibleFb">
                    <div class="editor-label">
                        FacebookId
                    </div>
                    <div class="editor-field">
                        @Html.EditorFor(model => model.FacebookId)
                    </div>
                </div>  

```