Can i change or hide sender's id when sending a sms

[Ha NV]

        Hi, everyone!
    Can i change or hide my sender's id when sending a sms. I can send sms
to customer using kannel like this:
http://x.x.x.x:8068/cgi-bin/sendsms?username=test&password=tester&from=8068&to=xxxxxxxxxx&smsc=VTEL&text=test+sms
.
     I try to change the &from value but it didnot work.
     Hope to hear you soon. :)