Ошибки в скрипте с# Assets/strelat.cs(15,13): error CS0029: Cannot implicitly convert type `float' to `bool' и Assets/s

скрипт :
using System.Collections;
using UnityEngine;

public class strelat : MonoBehaviour {

public GameObject Bullet;
public GameObject StartStwol;

void FixedUpdate() {
fire ();
}

void fire () {
if (Input.GetAxis ("Fire1")) {
Vector3 SpawnPoint = StartStwol.transform.position;

Quaternion SpawnRoot = StartStwol.transform.position;

GameObject Pula_for_fier = Instantiate (Bullet, SpawnPoint, SpawnRoot) as GameObject;

Rigidbody Run = Pula_for_fier.GetComponent ();

Run.AddForce (Pula_for_fier.transform.forward * 30, ForceMode.Impulse);
}
}
}