:) Well, you think very bad about me :) I`d already tried this ... So the template assamble compiles succesfuly, but when I try to verify it with "stsadm -0 verifyformtemplate ...." I get an error:
"FatalErrorNoThrow: An issue was found the following with variable 'MyForm.MyFormCodeNameSpace.myService'. Member variables are not supported. Use the FormState property to store data.". So I write this topic
http://www.infopathdev.com/forums/topic.asp?TOPIC_ID=4301. Do you understand me now? :)