row grouping cannot click tr.group after destroying DataTable

clintjie_lo

hi guys i have been following this example http://www.datatables.net/examples/advanced_init/row_grouping.html#, everything is working well and i managed to add ajax so that i could destroy the present datatable and reinitialize a new one. My problem is after reinitializing the DataTable the order by grouping doesn't work anymore. My code is same as the example except i have ajax and columns defined. Any help would be appreciated thank you