Creating a fibonacci sequence Service Flow

[John_Carter4 (John Carter)]

you can only use absolute number or pipeline variables in the count property. You need to do add a subtract step prior to the repeat step. This is a good example of where FLOW starts to fall down and personally I would implement this in java.

We have lots of online training course and a lot of them are free, have a look here

https://knowledge.softwareag.com/totara/catalog/index.php?cfp_multiselect_platformplatfor_8daf9[]=Integration%20%26%20API&catalog_learning_type_panel[]=course&orderbykey=featured&itemstyle=narrow

Here on tech forums you could try looking at this article

Creating and Debugging Flow Services using webMethods Service Designer

Introduction This document provides the text for the procedures covered in the video Creating and Debugging Flow Services using webMethods Service Designer Demo. Problem Statement Create an integration service to fetch the list of employees with salary greater than 10,000 from the database. Steps Involved Create an Adapter Service to fetch the list of employees from the database. Create a Flow Service and write the logic using flow steps. Debug the logic to analyze and fix issues, if any…

The above shows you a good example where a flow service adds value to manage a business integration use case.
regards,
John.