Hiding a colum

Hi,

I want to hide a column (but still filter on it).

The filter works (oTable.fnFilter( 'Active', 0 );), but the column is not hiding. It is always shown (see below).

{
"bVisible": false,
"mData": "EActive",	
"mRender": function(val, type, row)
			{
				return (val == 1) ? "Active" : "Hidden";
			}

		},

HTML

<table id="xx" class="table table-bordered table-striped table-hover">
	<thead>
	<tr class="tdSelect">
		<td></td>
		<td style="width:25%"></td>
		<td></td>
		<td></td>
		<td></td>
		<td></td>
		<td></td>
	</tr>
	<tr><th></th>
		<th>n</th>
		<th>r</th>
		<th>o</th>
		<th>p</th>
		<th>e</th>
		<th>d</th>
	</tr>
	</thead>
</table>

I am following the documentation here; why is this column not being hidden?

Thanks,

Nathan