Form values not updating using different for loops + Html.BeginForm

Question

I am currently using Html.BeginForm("test", testForm", FormMethod.Post) in order to update the values from my existing page.

I have more than 2 for-loops which allow to display the column name and the corresponding column value:

@for (var ctr = 1; ctr <= 5; ctr++)
{
    <tr>
        @Html.HiddenFor(m => m[ctr].id)
        @Html.HiddenFor(m => m[ctr].name)
        <td>@Model[ctr].name</td>
        <td>@Html.TextBoxFor(m => m[ctr].value, new { @class = "span6" })</td>
    </tr>
 }

and

@for (var ctr = 7; ctr <= 10; ctr++)
{
    <tr>
        @Html.HiddenFor(m => m[ctr].id)
        @Html.HiddenFor(m => m[ctr].name)
        <td>@Model[ctr].name</td>
        <td>@Html.TextBoxFor(m => m[ctr].value, new { @class = "span6" })</td>
    </tr>
 }

I also have a 'fixed' line item, both with column name and its value:

<tr>
    @Html.HiddenFor(m => m[11].id)
    @Html.HiddenFor(m => m[11].name)
    <td>@Model[11].name</td>
    <td>@Html.TextBoxFor(m => m[11].value, new { @class = "span6" })</td>
</tr>

When I clicked the submit button, only the 'fixed' line item was being updated. The line items with inside the for-loops were not updating.

Any suggestions how to fix these?