Creating a simple CAF project in Designer 7.2.1

From webMethods Designer with the My webMethods perspective, while creating new CAF project using 1. File > New > Project. 2 webMethods > Composite Applications > Portlet Application Project, a error is appearing as “JavaServer Faces 1.2 requires Dynamic Web Module 2.5 or newer.” at Dynamic Web Project, when I am selecting My webMethods Server as Target Runtime.
“Dynamic WebModule version” gives me only 2.3 as an option. Has any body experienced this problem in Designer 7.2.1 and know the answer where and how to configure Dynamic Web Module 2.5 or newer ?