sending longer messages at once

[Emil Majkowski]

Hi,

I would like to ask you how to send longer messages by gnokii --sendsms 
at once. If I try send longer than 160 characters message  I get  an 
error that the message cah have only 160 characters and nothing is send. 
I tried to use --long but it doesnt work.
How I can send more than 160 characters text message at once and let 
gnokii divide the text on few smses?

Thank you in advance for an answer
Emil