how i can use setState to change my arrays of object state

import React, {
      Component
    } from "react";
    class App extends Component {
      state = {
        RSVP: [{
          name: ["IronMan"],
          isConfirmed: false
        }]
      };
      handleChecked = () => {
        this.setState({
          isConfirmed: true
        }););
    };
    render() {
        return ( < div > {
              this.state.RSVP && this.state.RSVP.length != 0 ? this.state.RSVP.map(({
                name,
                isConfirmed
              }) => name && name.length != 0 ? ( <
                div key = {
                  name
                } > {
                  name
                } < input type = "checkbox"
                checked = {
                  isConfirmed
                }
                onChange = {
                  this.handleChecked
                }
                /></div > ) : null) : null
            } < /div>);}}
            export default App;

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