disconnection from ftp server

hi,

I don’t manage to disconnect the GM862 from a FTP server:

AT#FTPPUT=“test.txt” //to create a file

Hello //the text in the file

+++ //to close the data connection

AT#FTPCLOSE //to close the FTP connection

After the last AT command the GM862 had to be disconnect but no.

I don’t know why it doesn’t work

so if somebody Have an idea…

thanks

Jérôme