C# and "The left-hand side of an assignment must be a variable, a property or an indexer"

Hello

Ihave this scriptt
I think the syntax is good but i have this message
“The left-hand side of an assignment must be a variable, a property or an indexer”
line 28 and 54 for PROJET ?!
What’s wrong

public class test : MonoBehaviour
    {
    	public Camera cameraIntro;
    	public AudioClip musique;
    	public float duree;
    	public GameObject [] objetsIntro;
    
    	//public Camera cameraPrincipale;
    	public GameObject PROJET;
    	
    	
    	public List<Renderer> moviePlayers;
    
    	IEnumerator Start ()
    	{
    		foreach (Renderer r in moviePlayers)
    			r.enabled = false;
    
    		foreach (GameObject g in objetsIntro)
    			g.SetActive (true);
    
    		cameraIntro.enabled = true;
    		//cameraPrincipale.enabled = false;
    		PROJET.SetActive = false;
    
    		AudioSource.PlayClipAtPoint (musique, Vector3.zero);
    		yield return new WaitForSeconds (duree == 0 ? musique.length : duree);
    
    		foreach (GameObject g in objetsIntro)
    			g.SetActive (false);
    
    		foreach (Renderer r in moviePlayers)
    		{
    			MovieTexture m = ((MovieTexture) r.material.mainTexture);
    			if (m)
    			{
    				m.Stop ();
    				while (!m.isReadyToPlay)
    yield return new WaitForSeconds (0.1f);
    				r.enabled = true;
    				m.Play ();
    				yield return new WaitForSeconds (m.duration);
    				m.Stop ();
    				r.enabled = false;
    			}
    		}
    
    		//cameraPrincipale.enabled = true;
    		cameraIntro.enabled = false;
    		PROJET.SetActive = true;
    	}
    }

SetActive is a method and you use it like a variable in line 24 and line 50.

Replace:

PROJET.SetActive = false;

with

PROJET.SetActive(false);