Help please! Whats wrong with this code?

[system]

	Attention	Topic was automatically imported from the old Question2Answer platform.
	Asked By	Terraxin0_0

var spawntime = 3.0
var Apple = preload (“res://Apple.tscn”)

func _process(spawntime):
var a = Apple.instance()
var pos = Vector2(rand_range(100, 200), rand_range(-150, 0))

a.position = pos
add_child(a)

[system]

	Reply From:	barbaros

you have to add the node to the tree first, and then set the position