Visual Studio не видит команду Imput

using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using UnityEngine;

public class Con1 : MonoBehaviour
{
    public Rigidbody2D rigidBody;
    public float force;

    void Update() {
        If (Input.GetMouseButtonDown(0))
        {
            rigidBody.AddForce(Vector2.up * force, ForceMode2D.Impulse);
        }
    }
}