Using Variables in Custom Actions

[BzowK]

Hey All -
I'm trying to create a Custom Action which will detect RAR files, Extract them to a folder named after the RAR filename, then move the file to an archive folder.

I created a batch file which creates the folder and extracts the contents to it, but variable most of the time won't move the file afterwards as when I try manually deleting the file I cannot as UnRar.exe has it. Since Belvedere keeps running, it will keep adding UnRar.exe processes until I disable the rule :(. It seems that perhaps the file isn't finished extracting before trying to move however adding a timeout didn't help the situation.

It would really help if there was an variable I could use in my batch scripts which Belvedere refers to the found files OR a way to make the rules only run once per found file.

Any Ideas? Here's the script I am trying to use in Custom Actions:

path=%path%;C:\Program Files\WinRAR
setlocal
set rarFile=%1
set rarfilename=%~n1
mkdir "C:\Downloads"%rarfilename%""
unrar x "%rarfile%" "C:\Downloads%rarfilename%"
move "C:\Downloads%rarFile%" "C:\Downloads\Compressed"

Thanks!