Import Excel (.xlsx) using Power BI API

[YahorTsyplakou]

Hi everybody!
I try to Upload Excel (.xlsx) file to my Power BI using API.  Ability to upload excel files was announced by Microsoft: https://msdn.microsoft.com/en-us/library/mt243840.aspx 
BUT it works just for .PBIX-files, and I can't to realize uploading .xlsx-file
P.S. for importing pbix-file I used multipart./form-data, but it doesn't work for excel.

[Prabhav_Jain]

Is this issue resolved or anyone has any idea about how to import excel using api in power bi service

[Eric_Zhang]

@YahorTsyplakou

I'm not able to import an Excel either. I'm following the Power BI developer on this issue on github and already submit an issue.  Let's wait for the responses from the developer.

[YahorTsyplakou]

People tried realize it year ago, but unsuccessfully.
http://community.powerbi.com/t5/Integrations-with-Files-and/Upload-a-local-Excel-file-using-the-impo...
And what we should think about quality microsoft support?