When use DefineCustomElement, how to catch component's emit(update:modelValue)?

[east-rain]

i read this issues.(#6555)
and i use DefineCustomElement that kind of way.
after reading that issue, i can receive my web components emit except one case

but i can't receive component's emit about update:modelValue

return () => h(rootComponent, { ...props,
            'onUpdate:modelValue': (...args) => emit("update:modelValue", ...args),
            'onUpdate:ModelValue': (...args) => emit("update:modelValue", ...args),
            'onUpdate:onModelValue': (...args) => emit("update:modelValue", ...args),
            'onUpdateModelValue': (...args) => emit("update:modelValue", ...args),
            'update:ModelValue': (...args) => emit("update:modelValue", ...args),
            'update:modelValue': (...args) => emit("update:modelValue", ...args),
            onToggleFloating: (...args) => emit("toggle-floating", ...args),

I tried the above method but failed
what's the correct sentence about update:modelValue?
(in case 'toggle-floating' it works fine)

Additional information.
The web component was made with a component made with Vue3. The emit syntax is as follows:

emit('update:modelValue', someVal);
emit('toggle-floating', someVal);

The project I am using web component is vue2. I'm Using it as below.

<my-dropdown :modelValue.prop="value1" :items.prop="cItems" @update:modelValue="test1" @toggle-floating="test2"/>

[east-rain]

i have some mistake.

'onUpdate:modelValue': (...args) => emit("update:modelValue", ...args),

that render expression works nice. thanks.