Refresh Report Content using API

Hi there,

I am brand new to using the API, I also have a limited understanding about API's in general.

I have created a simple VBA (Excel) code that pushes data into a streaming dataset using the API.

I have now created a simple Report that is linked to that dataset. 

All the above works fine. I would like like to trigger a refresh of the content on the Report page instead of clicking the button "Refresh", is this possible? 

I have tried the following:

Function RefreshPowerBIReportPage()
Dim objHTTP As Object
Dim JsonDt As String
Dim sReportKey As String
Dim sGroupKey As String

sReportKey = ""
sGroupKey = ""

Set objHTTP = CreateObject("WinHttp.WinHttpRequest.5.1")

URL = "https://api.powerbi.com/beta/myorg/groups/" & sGroupKey & "/reports/" & sReportKey & "/UpdateReportContent"

objHTTP.Open "POST", URL, False
objHTTP.setRequestHeader "User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"
objHTTP.setRequestHeader "Content-type", "application/x-www-form-urlencoded"
objHTTP.send


End Function