Dear OlegK,
Thank you for your fast responce but that can not solve the problem. It only works when we change the value of select dropdown.
If I push the reset toolbar search, only the grid can reload but not the select value. The select value can be reloaded by refreshing the web page.
let say our country select consist of: USA, Australia and our city select consist of: NewYork, Washington, Brisbane, Perth.
If I choose Australia, the sub category select will consist of Brisbane and Perth only.
And then I want to clear my toolbar search to return original value of country select and city select.
I think it should use ajax to reset select toolbar value. How to make it works?
Best Regards,
Candra