Hi @nickneustroev, I started down that path, but ran into the issue/bug linked below. Maybe variables is the direction I need to go after getting confirmation from @patrick if the Input Data fields in the API Action can stop changing the name to lowercase.
I could go back and rename all of my POST variables in the server and across my client app, but it's annoying that this functions different than Server Connect. Server Connect creates POST variables that match the database field name. So TaskId database field typically has a POST.TaskId variable and most of the app I've already built follows this convention.