If you are using version 4.7.0 or later of the server you can access the workflow definition via our Open API endpoint. Inside your Analytics Platform you can right click on the workflow in your server explorer and select “Show API Definition”. This will open a visualisation tool called Swagger inside your web browser that can be used to see the different interactions you have available and also to display the workflow schema.
If you scroll to the bottom of the page there should be a link labeled “Schemas” which should contain a list of all the InputParameters for that workflow as well as a type (in the case of the simpler String, Date and Number inputs at least)
Just tested that the multiple-selection input isn’t displaying a list of the expected parameters at the moment but please note this feature is very much still a work in progress and we are adding functionality to it every release. I would suggest for the meantime that if you just need to read these values and not access them programatically then you could enter them into the Description field of the input node.
You can also access this tool via the :openapi endpoint (same URL path as the :jobs endpoint) if you wish to view the openAPI definition json or :openapi?showInUI=true if you wish to launch this visualisation tool again.
Let me know if this all made sense or if you need some further clarification.