Custom Right Click Menu on multiple files

Question

I added a command to the right click context menu for sql files in windows explorer, but it only works if I select a single file. How can I make it work for multiple files. I added the command to:

HKEY_CLASSES_ROOT/sqlwb.sql.9.0/Shell/ExecSql/Command

I'm on Windows 2008. Ideas? Thanks

Edit: This does work. I suppose last night I must have been selecting a non .sql file or something