External paging paging.banner.some_items_found displays 1-10 in the second page (other pages as well)

I'm using external paging using , I am not using the interface (first way to do it) just using getting the parameters and sending the partialList to the table.
parameter = request.getParameter ( new ParamEncoder(tableName).encodeParameterName( parameter ) );

the property paging.banner.some_items_found displays 1-10 when I go to the other pages. e.g.
116 items found, displaying 1-10.
Pages: 1 (2) 3 4 5 6 7 8

is there a property or something I need to set in order to show the proper numbers e.g. 20-30
thanks in advance