Working with dynamic editor template - asp.net-mvc

Question

I am trying to build a web site that lets user to create new violation.Each violation has its own input area.For instance, if user wants to create a new Ramp Width Violation, he/she should provide width or for Ramp Slope Violation slope should be provided as input.
Taking into account those requirements , I decided to have a dynamic property inside my view.
My dynamic object property can be boolean , integer or double according to violation type.
Here is my class that includes dynamic property.Other properties are removed for brevity.
public class CreateViolationViewModel
{
public string DynamicName { get; set; }
public object DynamicValue { get; set; }
}
Main View
#Html.LabelFor(model => model.DynamicName, #Model.DynamicName, new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(x => x.DynamicValue, "violationDynamics_" + Model.DynamicValue.GetType().Name)
</div>
#Html.HiddenFor(model => model.DynamicName, new {#value=Model.DynamicName })
EditorTemplate For Integer(violationDynamics_Int32.cshtml)
#{
Layout = null;
}
#model int
#Html.TextBoxFor(x => x, new { #class = "form-control", #type = "number" })
#Html.Hidden("ModelType", Model.GetType())
EditorTemplate For Double(violationDynamics_Double.cshtml)
#{
Layout = null;
}
#model double
#Html.TextBoxFor(x => x, new { #class = "form-control", #type = "number" })
#Html.Hidden("ModelType", Model.GetType())
Controller
[HttpPost]
public ActionResult Create(CreateViolationViewModel createViolationViewModel)
{
}
When the page is loaded it renders the related editor templates.The problem is that when the form is posted back dynamic value comes as a array of string as shown below.
I know I need something like model binder but haven't found the solution yet.By the way I take this approach from the previous answer here
So questions are ;
1- How can I make this approach work for post backs?
2- Is there any other recommend or easy approach to accomplish my task ?
Thanks