how to delete files in remote server?

[ctfwren]

In Dos, i can use this commad upload file 'G:\1.txt' to remote server.
D:\FlashFXP\FlashFXP.exe -upload ftp://Test:123@127.0.0.1 -localpath="G:\1.txt" -remotepath="/1.txt"

now,i want to delete file in remote server ,like the upload command.

D:\FlashFXP\FlashFXP.exe -delete ftp://Test:123@127.0.0.1 -remotepath="/1.txt" ????

this command is wrong...

help , thanks.