Popover scrolling issue with mouse wheel

[if1eight0sty]

I need to make a component which functions as Combobox. The command component has a fixed height. If the command items exceed the height the command components allowing scrolling in y direction.
I have used a popover inside a dialog component. Since the popover is inside the dialog I am not being able to scroll the command items with my mouse wheel, but when it allows scrolling with the scrollbar on the side. I have found that popover inside the dialog restricting the wheel scroll. how can i solve it? any suggestions??
here is my code and my ui sample:

code

ui