Generate a powerpoint with Mendix using Java action

Hello I tried to generate a powerpoint using Java action by following what is explained there But I keep having struggles    Does someone have an example of simple JSON and Java action that can be used to generate a simple powerpoint to be able to see how it works?   Thanks very much 
1 answers

Would an alternative solution be to generate a PDF document in Mendix using the standard document generation tools, and then run it through a convertor to turn it into a PowerPoint? I don’t know how flexible this is, but there are a few modules in the marketplace that can do this.

Good luck!