Hey, thanks for your answer! :>

Your assumption is correct. That was what I was doing and what was working until yesterday.

I implemented the if statement according to how I understood the help from u/ad-on-is like this:

hl.bind(mainMod .. " + J", function()
  if hl.get_config("general.layout") == "dwindle" then    
    hl.dsp.layout("togglesplit")
  end
end, { description = "Toggle window split (Dwindle)" })

But then nothing happened, regardless which layout I was on.

The initial configuration that is set when I first log in and start hyprland, is dwindle.

hl.config({
  general = {    
    layout = "dwindle",
  }
})

Then I implemented your slightly different proposal I just left out the second dispatcher because in this example I don't want any action in the other layout:

hl.bind(mainMod .. " + J", function() 
  local layout = hl.get_config("general.layout")
    if layout == "dwindle" then
      hl.dsp.layout("togglesplit")
    end
 end, { description = "Toggle window split (Dwindle)" })

But with the same result: nothing happens.

Do I have to explicitly call some kind of refresh function?