How can I package my qt application with Qt Creator in Nokia Qt SDK

I have written a simple qt application with qt creator, I have tested with PC simulation and N900 device, It's OK. Qt Creator created a .deb file in my mobile. but it can't be installed. The installer always complained "incompatible pa开发者_开发知识库ckage...".

The SDK document says I can modify my application's version, or I can skip the package step in the project setting, but in my Qt creator, there is no these setting at all. Can anyone help me, thanks! :)