script executed multiple times

Hi all,

I made a vbscript that changes filenames to lowercase. I added it to
the right click menu handler for files. It works quite ok, but the
script is executed multiple times. It seems to be executed separately
for each file, instead of 1 time where the arguments are the files.
Here is the Command I used in the registry:

wscript.exe "<my path to vbs file>" "%1"

Does someone knows what I have to change?

Kind regards,
Frederik