Help Gmail & Desire HD Reminder problem;

[ShoToradze]

Hey Guys

I have this kind of problem. my DHD is synced with my Gmail Calendar.
But sometimes some events that i created have the weird - Going? YesNoMaybe function in the Gmail Calendar, when i check; I noticed, this kind of events never pop up in my phone as a remindder;
I thought this are the ones i created via email; But no. I created one more again, and it did pop up. But i didnt notice doing anything different;

So what is the issue?
I think i am missing out sumthn, but what?

Thanks in advance;