Spring boot application in shared process engine

Hello All,
I downloaded sample code of spring boot app for shared process engine from the below link,

Everything works good except when I add the “application.properties” under “src/main/resources” and set the value using “value” annotation its not reading the value. Here is the screenshots of the process and the project,

Tomcat Log after the process is initiated:

Please let me know where I’m making mistake.

Thank you for the help!!