Modding Help Force Activate Teraformer with script

I want to activate this teraforrmer when the player gets close to it.

I a starting script here;

function update(dt)

local radius = config.getParameter("activeRadius", 5)
local options = { includedTypes = {"player"} }
local position = object.position()
local players = world.entityQuery(position, radius, options)

if players[1] then
self.active = true

end

end


But I notice that the "self.active = true" will not work because there is no value called "active" that turns the TF on.
So what do I have set to true to make it work?