local plr = game.Players.LocalPlayer
local stag = '02' --change to your stage
for i,v in pairs(game:GetService("Workspace")['stage'..stag].character[plr.Name].thorn:GetChildren()) do
if v.Name == "collider" then
v.Size = Vector3.new(30, 5, 100) --change to what you want
--to understand size: sides, up/down(not useful), front/back
warn'edited'
end
end