I have made this connection in my code

#DEFINE INTERNET_AUTODIAL_FORCE_ONLINE 1
#DEFINE INTERNET_AUTODIAL_FORCE_UNATTENDED 2
#DEFINE INTERNET_AUTODIAL_FAILIFSECURITYCHECK 4

DECLARE INTEGER GetActiveWindow IN user32

DECLARE INTEGER InternetDial IN wininet;
INTEGER hwndParent, ;
STRING lpszConnectoid, ;
INTEGER dwFlags,;
INTEGER @lpdwConnection, ;
INTEGER dwReserved

DECLARE INTEGER InternetCloseHandle IN wininet;
INTEGER hInet

LOCAL hConnection
hConnection = 0

? InternetDial (GetActiveWindow(), "CK1",;
INTERNET_AUTODIAL_FORCE_ONLINE, @hConnection, 0)

It is possible disconect from this connection? How
I have try this command, but do not work

InternetCloseHandle(hConnection)

why?