Problems with smb create mode

Hi there I have some troubles with the smb command create mode how to create an file with smb with the rights (unix 755) i tried it with (samba 0755) but then i always get rwxrw-rw- the . directory has rights 777 there should be no problem with general rights is there an bug, or is there another syntax, the command directory create mode is functioning there if i enter the rights 0755 the directory witch is created really has rwxr-xr-x Thx DJMAD