Ohio Class for sub command

[Alert 1]

I cannot seem to make the ohio class sub work in sub command.
I load smo6 surgical strike.mu in the editor select united states,
then switch subs Ohio SSBN michigan SSBN 727 and save.
There is no controlable sub to put the check mark next to on page 2 Anyway when i load the mission it says no platform was selected to drive.
Can any one help please?really luv this sub
tom
anybody ?
screw it prob crap anyway