yield WaitForSeconds(changeTime + randomTime);  

Error CS1526: Новое выражение требует подстановку символов (), [] или {} после типа (CS1526) (Assembly-CSharp)

public class Example : MonoBehaviour {
         
     float moveSpeed = 1.0f;
     float changeTime = 1;
     float rendomLimit = 0.25f;
     float R = 1f;     
     private Vector2 tempPos;
     private Vector3 newPos;
     private float randomTime;
     public bool changeOrder = true;
    bool shiftMode = false;
         
     void Update()
     {      
      if(shiftMode == false)     
      {     
       if (changeOrder)      
       {
     changeOrder = false;
        StartCoroutine(Coroutine());      
       }      
      }     
     }
        
        
     public IEnumerator Coroutine()     
     {    
        tempPos = Random.insideUnitCircle * R;        
        newPos = new Vector3(tempPos.x, tempPos.y, 0);      
        randomTime = Random.Range(0.0f,100.0f);
        yield return new WaitForSeconds(randomTime);         
     changeOrder = true;
     }      

       
}