How to access the catalog variables (in the requested item) via the new flow designer ...?

[Zod]

Hi Experts,

I'm trying to understand the new flow-designer but failing doing my 1st piece of work ;-(

When using the flow-designer and i.e. starting with a trigger like new service request item is created.

... and I wand to do something with a variable used within the request ... I can't find the variable anywhere ...  

Just as an example ... create a catalog item with a variable that is to be filled during the request process and try to update this variable value via a flow-designer workflow after the request item has been created ... 

[Alex Edmiston1]

Coming in the London release you will be able to start a flow via the Service Catalog

https://developer.servicenow.com/blog.do?p=/post/new-in-london-new-ways-to-trigger-flows/