How would I change the MaxDistance of the chat in this chatting NPC script?

How would I change the MaxDistance of the chat in this chatting NPC script? I’m having trouble with this… Examples would be great as I am not much of a scripter!

local Chat = game:GetService("Chat")
local NPC = workspace.BPNPC.Jisoo 
script.Parent.MouseButton1Click:Connect(function()
    Chat:Chat(NPC.Head, "Hi!!", Enum.ChatColor.White)
end)

I built an example in the game… the code is included!