Exact search in datatable dropdown

shafiqkr

I have a simple table with tree rows.I have a dropdown have three values (Apartment,Loft apartment,Hotel apartment).
When i select Apartment it show me Loft apartment also. I know that there is some text matches,i want to search exact complete text..

I tried this but no luck
oTable.fnFilter( "^"+this.value+"$", $(this).attr('id') , true);

here is my html

http://jsfiddle.net/D4xZy/

Here is my code

$("#tbl thead select").change( function () {
oTable.fnFilter( this.value, $(this).attr('id') );
});