Unable to cast Instance to CoordinateFrame?

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#1

I am using a WeldConstraint to weld my part to the players character PrimaryPart which is the HumanoidRootPart. It doesn’t seem like I can use C0 in WeldConstraint so what should I do?

I am getting this error in the output:

Unable to cast Instance to CoordinateFrame

#2

Can you show the error line? That error appears when you try to put an Instance as a property which only accepts CFrames.

#3

The Script:

Player.PlayerAdded:Connect(function(Player)
     Player.CharacterAdded:Connect(function(Character)
        local Holder = Holder:Clone() -- Location to Holder and then cloning it
        Holder:PivotTo(Character.HumanoidRootPart)
        Holder.Parent = Character

        local WeldConstraint = Instance.new("WeldConstraint")
        WeldConstraint.Part0 = Holder.PrimaryPart
        WeldConstraint.Part1 = Character.PrimaryPart
        WeldConstraint.C0 = WeldConstraint.Part0.CFrame:ToObjectSpace(WeldConstraint.Part1.CFrame)
        WeldConstraint.Parent = WeldConstraint.Part0
   end)
end)
#4

Few things I see wrong:

:PivotTo() only accepts CFrames, that’s why you should input Character.HumanoidRootPart.CFrame instead.

WeldConstraints don’t have the C0 property unlike Welds. The only reason to use WeldConstraints over Welds (as far as I know) is to not have to set that property manually.

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#5

Oops… Totally forgot that I hadn’t put CFrame after Character.HumanoidRootPart…

Yes Thank you this seems to work. However, I am having this issue where the welded part to the character doesn’t move with the character. Is there a way to fix this:

#6

That is because the part is welded to the HumanoidRootPart, not the torso.

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