I don't think there is an init level 7. They are numbered 0-6.
0 - halt
1 - Single user mode
2 - Multiuser, no networking
3 - Full multiuser mode
4 - unused
5 - X11
6 - reboot
Perhaps your looking to set it to 5? If so, I don't think you can as the SME server doesn't have a graphical environment. Or, perhaps I have misunderstood your question.