‘KeyboardEvent.keyCode’ modifier on ‘v-on’ directive is deprecated. Using ‘KeyboardEvent.key’ instead in vue

I am migrating my application vue 2 to vue 3. While running the application, i am getting some deprecation error.

In my keyboard event modifier, i was using numbers and key for keyboard event. But, this concept is deprecated so i am getting errors. I am not sure how to use it now?

Previously

 @keyup.ctrl.86="onUpdateEvent()"

I am getting error because of using numbers. How to resolve those?