well the
[, mode=true]
means optional, you either remove this competely or include it as intended

so it should be like

set_frozen(entity)
-- or
set_frozen(entity,true)
-- or
set_frozen(entity,false)


depand on what effect you want.


Thank you for clarification.
After correcting it, the ...

I have this code currently:

if hours < 4 or hours > 22 then
entity.active = false
end
if hours >= 4 or hours <= 22 then
entity.active = true
end

where I have a local variable entity and I give it the path to my entity lua file, however the machine does not stop working. I tried the code in ...

I want to make machine that only works during the day, similar to solar panel. I tried using a function that would output me a crafting speed of 0 during the night hours, making the machine stop during night. However I get error:
"Value (function) can't be saved at property tree ROOT.assembling ...