how to add nxp lpc 2400 series devices in Keil

Hi all!
how to add nxp lpc 2400 series devices in Keil
When you create a new project, I have no choice LPC2478
I have the opportunity to choose that those series listed in http://www.keil.com/dd2/
but I need a new project for LPC2478.
Is that possible?

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