Hmm.. won't accept my settings (Saunalahti, Finnish carrier). Keeps saying "could not save APN settings. Did you enter a correct APN?"

I'm trying to offer it these settings:
APN: mms.saunalahti.fi
MMSC: http://mms.saunalahti.fi:8002
width: 300
and my number

What am I doing wrong?