How do I get instances of slot components?

[HenryOoO]

Version

vue-final-modal: ^4.5.4
vue: ^3.4.21

Description

I am a vue novice, I created a public style pop-up window MyModal, inside the OK button, I want to click the OK button to get the Form inside the child component form, can this be achieved?

<script lang='ts' setup>
import Form from '@/components/Form.vue';
import MyModal from '@/components/MyModal.vue';
import { useModal } from 'vue-final-modal';


const { open, patchOptions } = useModal({
    component: MyModal,
    keepAlive: false,
    attrs: {
        title: 'my modal',
        "onSave": () => {
           // How do I get the value inside the form here?
        }
    },
    slots: {
        default: Form
    },
})
</script>