delete files from FTP server

I have got many files in ftp directory which is no more usable and i wanna delete all the files at once.

I used mdelete *.ABC commands to delete but every times it prompts or ask to to confirm delete. and i have got so many files that i can't hust go like this way.

is there any switch or commands which i can use with FTP commands from microsoft command prompt to that?

regards
Hussain