public class ClientEvents {
    @Mod.EventBusSubscriber(modid = Mymod.MOD_ID, value = Dist.CLIENT, bus = Mod.EventBusSubscriber.Bus.FORGE)
    public static class ClientForgeEvents{
        @SubscribeEvent
        // Event is on the Forge event bus only on the physical client
        public void onClientTick(TickEvent.ClientTickEvent event) {
            if (event.phase == TickEvent.Phase.END) { // Only call code once as the tick event is called twice every tick
                while (KeyBinding.SET_ITEM_KEY.consumeClick()) {
                    // Execute logic to perform on click here
                    Minecraft.getInstance().player.sendSystemMessage(Component.literal("Key is pressed!"));
                }
            }
        }
    }

    @Mod.EventBusSubscriber(modid = Mymod.MOD_ID, value = Dist.CLIENT, bus = Mod.EventBusSubscriber.Bus.MOD)
    public static class ClientModEvents{
        @SubscribeEvent
        public static void onKeyRegister(RegisterKeyMappingsEvent event){
            event.register(KeyBinding.SET_ITEM_KEY);
        }

        @SubscribeEvent
        public void gatherData(GatherDataEvent event) {

        }
    }
}

Nothing appends when I press the key I set.

I followed the forge docs. Did I make mistakes? Help needed. THANK YOU!

Quote

public static class ClientForgeEvents{

@SubscribeEvent

// Event is on the Forge event bus only on the physical client

- public void onClientTick(TickEvent.ClientTickEvent event) {

+ public static void onClientTick(TickEvent.ClientTickEvent event) {

 

https://forge.gemwire.uk/wiki/Events#/media/File:Guide_to_Event_Handlers.png

Just use KeyInputEvent and if you have server side logic just send a packet to server.