What does it mean by the following?

set it as the active DMP on the server, and use it to plan, given a new start and goal: 

There is a code following this sentence. and at the end of it it states- Execute this. I created a directory - scripts and added the code as dmp.py and made it to executable by-

chmod +x scripts/dmp.py

And then i roslaunched the package agian. I am unable to see the desired response.