onClick event doesn't act in ReactJS

I have a react code where I have onClicke event. I suppose to get implementation of function(someFunction). I didn't get any error running this code, everything else works. I guess the problem can be in function. The React code is

    class Hello extends Component {
  constructor() {
    super();
    this.num = { number: 4 };
    this.someFunction = this.someFunction.bind(this);
  }

  someFunction() { this.setState({ number: this.num.number + 3 }); }

  render() {
    const coco = {
      color: 'blue',
      background: 'yellow',
      width: '200px',
      height: '200px',
      padding: 'lem'
    };

    return (<div style={coco} onClick={this.someFunction}>
      <p style={coco} onClick={this.someFunction}> bly blya
        Hello {this.props.name} </p>
      <p style={coco} onClick={this.someFunction} >
        Current count: {this.num.number + 3}
      </p>
    </div>)
  }
}

render(<Hello/>, document.getElementById('container'));