Update Field Status in Database

Hi All,

I'm very new to Zimbra Application. I've scenario like, added one button (Archive) in Compose mail window. If I click on the button then I need to store a Boolean value in database. I'm able to set the Boolean value by using event mechanism through Zimlet, but I'm failing to update this Boolean value in the database. Please any one let me know how can we do this process using zimlet or any alternate way to do this. I'm really breaking my head, sine last two days.

Thanks & Regards

Sai Mohan