How to call OrchB from OrchA on TR 9.2.4.3

I am trying to update only certain records on an App that doesn't have a QBE line

Here's how I am doing it :

I am trying to call Orchestration B from Orchestration A

Orchestration A returns multiple records - dataset1

Orchestration B iterates over dataset1 but needs parameters to be passed

when I try to run the Orchstration A - it shows a parameter jde__object with 'Use object for input' toggle switch enabled (to the right) but not able to change.

I need to pass parameters to Orchestration B from Orchestration A.

What does jde__object mean and how am I expected to pass the parameters into this Orchestration.