Search option in Dashboard Filter Selections

Hello Experts,

Env : BI 4.1

I need to implement the following work around in a Dashboard.

we are finding difficulty in scrolling down while using the combo box selection if the no of LOV's count is high

Need to provide a search option when users selecting input parameter (Combo box or any other selection).

Note:We need to deploy this dasboard in Mobile(Ipad) so i can't use query prompt selector component which is Mobile compatible

Please suggest your inputs

Regards,

Selva