jquery datatables server side update to filter out inactive records

I have the following jQuery datatables initialization code and on the page

pTable = $('#myTable').dataTable({
					"bProcessing": true,
					"bServerSide": true,
					"bStateSave": false,
					"bAutoWidth:":false,
					"iDisplayLength":8,
					"sAjaxSource":"myServerSideScript”
					"bLengthChange": false
		}

Additionally I have a checkbox on the page above myTable that allows a user to see only records with an “active” status.  

 Only active <input id="active" onClick="showActive(this)" type="checkbox" name="selected">							   
		</form>

I’m not certain what dataTables API to use (if there is even one) to accomplish this.  Something like pTable.fnFilter(‘active’) but that keeps all the filtering and sorting already present in the table.  Is there a function to update the server side call but maintain the filtering and sorting?
Thanks!