Pro tools thinks I\'ve only got in1 in2 and S/PDIF

I've just plugged 5 mics into my projectmix, and created 5 audio tracks, but in the mixer window, the input section says I've only got the option of in1 in2, and S/PDIF L and R. Surely I should have In's 1-8, and then S/PDIF. I can't assign a separate input for the 5th mic. What's going on?

Problem solved. I worked it out.

What did you do to get it to work?

I went into: Setup, I/O, and clicked on the input tab and then on "default"