Unable to pass parameters across multiple URL with plugins

[anthony10]

Hello everyone! I am creating a mobile app that passes several parameters back and forth to a public api. I have been stuck trying pass values dynamically in subsequent POST calls to the public api. I was assuming as long as I can use the same name for a parameter in my custom plugin, then I could use the same parameter in a follow up POST call to the public api. Since I am not seeing any values of those parameters in the application data folder, I wonder if I am misunderstanding how dynamic data works in a plugin which calls a public api. Any documentation suggestions or hacks to make the process work?

[Jici]

Can you share what you have set exactly?

[anthony10]

Sure. Below are the screenshots of the key steps. First is the workflow which shows the high level process to interact with the public api. Remaining screenshots illustrate how I constructed the POST calls to connect with the public api: