aws opsworks multiple nodejs apps?

I have one OpsWorks Nodejs Stack. I setup multiple nodejs apps. The problem now is that all nodejs server.js scripts listens on port 80 for amazon life check but the port can be used only by one. I dont know how to solve this. I have read amazon documentation but could not find the solution. I read that I could try to change deploy recipe variables to set this life check to different port but it didn't work. Any help?