JS:
for(var i=0; i<10; i++){
Instantiate(prefab, Vector3( Random.Range(-1.14, 6.0), - (i*10), 0) , Quaternion.identity);
}
C#:
for(int i = 0; i<10; i++){
Instantiate( prefab, new Vector3( Random.Range(-1.14f, 6.0f), - (i*10.0) , 0.0) , Quaternion.identity );
}