You can pass the call_id dynamically by referencing it in your function arguments instead of hardcoding it. In your POST setup, map the call_id from the session/call context (usually available as a variable like {{call.id}} or similar depending on your setup) into the JSON body you’re sending.
If it’s not showing up, it likely means the variable isn’t being exposed in your current function config so you’ll need to explicitly include it in the function parameters or pull it from the call metadata before triggering the function.
If you want, share your setup and I can help you wire it correctly.
@jsdev