How to check is an object is a certain distance away from my character?

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#1

I’m writing a script that launches an object far away from the player’s character and after it’s out of range, it despawns. How do I check whether the object’s out of range of the player?
I tried

 local Distance2 = (HumanoidRootPart.Position - Mjolnir.Position).Magnitude
		if Distance2 > 15 then
			Debris:AddItem(Mjolnir)
end

to calculate the distance and destroy the object but it doesn’t work, what did I do wrongly?

#2

Debris:AddItem will remove after ten seconds if you don’t specify. Why not just Mjolnir:Destroy()?

#3

Is this section of script inside a loop?
If it isn’t it only checks once, then continues.

#4

It checks everytime the remoteevent is triggered.

#5

I read somewhere that there is a slight delay with destroy(), whereas Debris:AddItem() is instantaneous or something.

#6

I switched to Destroy() and nothing changed, so the issue clearly lies with the distance checking.