error when using the dhtmlxconnector_php file used

when i am using this code for combobox filteration then it gives me error

$filter1 = new OptionsConnector($res);




erroor:- class openconnection not found it give me error

i am using dhtmlxconnector_php/samples/grid/05a_select_filter.html

and if i am using the below code



the it gives me error

call to undefined methiod gridConnector::set_Options()

please repy me whicj js file we will used so this errror must be gone now currently i ma using grid_connector.php files

Please check if you are using latest version of dhtmlxConnectors (0.95). set_options() method is available only since dhtmlxConnectors 0.95