iPad Calendar Not Updating In Google Calendar

Hey everyone, not sure if this is the best place but...

I created a calendar in iCal on my Macbook Pro a few weeks ago. I broadcast it and published it to Google Calendar, so everyone whom I give permission to can see the updates. It works perfectly.

Last night I tried to add some entries to the calendar on my iPad. They updated through MobileMe on my iPhone and iCal/MBP. However, the entries do not show on the Google calendar.

Can I only update the Google Calendar from the program that I created the iCal calendar on?

Thanks for your help!