Help on a lua script

[benf]

I wrote a script that's supposed to expand the selected folders and collapse all others.
When I start it in the editor, compilation is fine but nothing happens !!!

Any idea ?

--[[
* ReaScript Name: Expand selected folders collapse others
* Author: BenF
* Licence: GPL v3
* REAPER: 5.0
* Extensions: None
* Credits: x-raym for the empty script
* Description: Automatically expands the selected folder(s) and collapse the others
* Instructions: 
*   Select the folder(s) you want to expand
--]]

--[[
 Changelog:
 * v0.01
]]


-- Console Message
function Msg(m)
  reaper.ShowConsoleMsg(tostring(m).."\n")
end



--/////////////// MAIN ///////////////////


function MainFunction() 
  i = 1
  tr = reaper.GetTrack(0, 0)
  folder = 0
  depth = 0
  selected = 0
  ret = false

  reaper.Undo_BeginBlock() -- Begining of the undo block. Leave it at the top of your main function.
  
  
  -- take a look at each track in project.
  for i = 1, reaper.CountTracks(0) do
    tr = reaper.GetTrack(0, i-1)
    -- look if it's a folder
    folder = reaper.GetMediaTrackInfo_Value(tr, "I_FOLDERDEPTH")
    -- get its depth
    depth = reaper.GetTrackDepth(tr)
    -- look if it's selected
    selected = reaper.GetMediaTrackInfo_Value(tr, "I_SELECTED")
    -- is it a folder ?
    if folder == 1 then
      -- is it selected ?
      if selected == 1 then
        -- we expand it
        ret = reaper.SetMediaTrackInfo_Value(tr, "I_FOLDERCOMPACT ", 0)
      else
        if depth == 0 then
          -- we collapse it
          ret = reaper.SetMediaTrackInfo_Value(tr, "I_FOLDERCOMPACT ", 2)
        end
      end
    end
  end
  
  reaper.Undo_EndBlock("BenF_Expand Selected Folders Collapse Others", 0) -- End of the undo block. Leave it at the bottom of your main function.

end




--reaper.PreventUIRefresh(1) -- Prevent UI refreshing. Uncomment it only if the script works.

MainFunction() -- Execute your main function

--reaper.PreventUIRefresh(-1) -- Restore UI Refresh. Uncomment it only if the script works.

reaper.UpdateArrange() -- Update the arrangement (often needed)

[spk77]

"I_FOLDERCOMPACT " should be "I_FOLDERCOMPACT".

(There's a whitespace at the end)

[benf]

Yes. Thanks !
How didn't I see that ?!!!

[spk77]

It's sometimes difficult to catch those kind of typos

[Thonex]

Originally Posted by spk77

It's sometimes difficult to catch those kind of typos

I'm the worst with finding those types of syntax errors. Nice catch spk777!