Hey Alex,
If Antony’s very valid suggestion doesn’t work for you, every server action can be called with the api action step.
For example, if you have a server connect called fetch_trans that is in a folder called trans you would call:
https://{{$_SERVER['HTTP_HOST']}}/dmxConnect/api/trans/fetchTrans.php
The $_SERVER portion is just inserting at runtime the server it is running on. /dmxConnect/api/ is static, and the rest is just the folder path and file with php extension.
You can call a POST or GET depending on what you want to do, and pass any information in query or input data depending on what you choose. Keep in mind that SESSION variables will not be available as a new session is triggered by the api call – just pass any values needed using the input or query params.
Here is what one of mine looks like: