PowerApps - SAP ERP: How to refresh available RFC parameters

Good morning,

We are currently building an interface between Sharepoint (cloud) and our SAP ERP (on-premise) using an Azure Gateway and the SAP ERP "Call SAP function" step in Powerapps. In this step, a custom RFC-function is called. After I created the RFC function module in SAP, the available parameters were perfectly listed in Sharepoint.
However, any changes I do on these parameters (data type, parameter name, adding or removing parameters) on SAP side, are not being updated in my PowerApps flow in Sharepoint. As I am as new to SAP as to PowerApps, I might be missing something obvious. I know the function is still in preview but it's already a great help and I'd like to know: Is there a way to make Sharepoint "refresh" the available parameters for the RFC function? Or is there some trigger in SAP to "publish" available parameters, that I wasn't aware of?
My current workaround is creating a completely new RFC-function module if there's the need for a parameter change, deleting the old one. That's annoying but okay while in development. But there has to be a better way :) Maybe you can give me a hint?

Thanks
Freya