It is probably because your database column is defined as a DOUBLE with two decimal places, and not INTEGER. You could update that in the database itself if you don't want to support decimals for this field.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.