calendar in Icloud?

[goavs18]

I have my calendar items backed up to the cloud on my MBP, I just turned on the calendars in Icloud on my Iphone4s and when I did that my calendars all showed in the calendars listing and were all checked but nothing showed up in the calendar itself. cant figure out why nothing shows in the calendar, so I turned it off in the Icloud on my Iphone and now nothing is there. I will have to wait and get home to sync it with my MBP. just trying to figure out what to do to get my iphone to have the calendars sync with the Icloud.

Thanks
Gary