ONGL save values - Is there a "session store" for a runnning workflow?

Hello,

I'm new to orchestrator and I'm struggling with some issues in presentation. I have some actions that I call via ONGL form the presentation.

I use them to populate some dropdown menus. I want to display some dropdown menus only when the returned element are more then one.

Currently i have something like that:

but this leads to 3 calls to the same function that is slow, it involves a bunch of rest calls. In there a way to save values in the workflow from an action, and use those values in ONGL?

Is there some kind of "session" that I can access from the actions?

Thank you