# Spawns copies of FadingSprites per second extends sprite const FadingSprite: PackedScene = preload("res://GhostTrail/FadingSprite.tscn") # The number of ghosts instanced per second export var amount := 10.0 This is different in downloaded file # If `true`, creates `amount` instances of FadingSprite every second export var is_emitting := false setget set_is_emitting Comes up as error
You need to continue the tutorial. As you can read from the error, it tells you that the setter function is not defined. We define it a couple of steps later on the page to avoid jumping back and forth between different places in the script.
Then, regarding the amount value being different, as mentioned in the comment above the variable, this just controls the number of ghost instances per second, so you can set it to any value you like.