Some events are happening from time to time and I'd like a colleague of mine to notify me about the occurrence of those events next time they happen. So, I'm writing to that colleague:
I'm looking forward to hearing from you about an event having happened again.
In response I'm expecting to receive a message of the following sort: "Hey, finally the event has happened again, log into the system and look at the consequences. "
My question is whether my message to the colleague is OK or not? What's wrong and how I could ask about the same in a grammatically correct way?