need some help minions spawn script

Unity Engine
1

i made this script for minions to spawn but i wont work can someone tell me what i did wrong

var spawn : Transform;
var minionPrefab : GameObject;
var spawning : boolean = true;

function Start () {
spawnMinion();
}

function Update () {

}

function spawnMinion () {

while(spawning) {
yield WaitForSeconds(0.2);
Instantiate(minionPrefab,spawn.transform.position,spawn.transform.rotation);
yield WaitForSeconds(5);
}
} this is the error please help me

2

what is the error? can you copy paste it here?

3

i made a screenshot of it

4

yes its up there, but probably you posted the thumbnail of the image, not the full image. can you post the full image?

5

this is the link to the image https://lh4.ggpht.com/FO_zXqODYulqJjHFmS1MOFDxaTeNo9_GKFNXG4OOetcYdRsInQNy365nS3QPKQj6H9gkfx0=s136