Does ArcGIS Python new_item = local_exp.upload() work with local EXB

[CS_IBM]

Greetings,

I have spent hours trying to upload a EXB Local file into AGOL.
I used the ArcGIS Python new_item = local_exp.upload() to upload an EXB folder.

Can you use new_item = local_exp.upload() to upload an EXB folder into AGOL??
Or is that only used to transfer from one Portal to another Portal.

I want to upload the EXB web App file, that I have unzipped.

Thanks
Clive