Adapter Module: setMessageProperty is undefined

Dear Experts,

I am developing an AdapterModule, I want to set a DynamicConfiguration parameter. I have copied a source code from this blog https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/4623. [original link is broken] [original link is broken] [original link is broken]

But in NWDS I get an error saying "The method setMessageProperty(String, String, String) is undefined for the type Message".

All needed jars are added as External Libraries.

Does anybody have an idea how to solve this problem?

Best Regards,

Artsiom Anichenka