REST API Injected data - special local letter do not show correctly.

seems to be a powerShell issue for invoke-restmehtod and invote-websrequest as they cannot send as UTF8.

I have rewritten my powershell to make a call.

https://docs.microsoft.com/en-us/power-bi/developer/walkthrough-push-data-add-rows

Will send pull request to update the moduel asap, and then i hope he accepts :)

Prototype code (not pretty but works :)):

Function Invoke-PBIWebRequestPost {
param($Uri, $Headers,$Body)

  # Remove NewLine from json
  $Body = $Body -replace "$([Environment]::NewLine) *",""  

	write-verbose "Posting data to URL: $Uri"
    $request = [System.Net.WebRequest]::Create($uri) -as [System.Net.HttpWebRequest];
	$request.KeepAlive = $false;
	$request.Method = "POST";
	$request.ContentLength = 0;
    $request.TimeOut = 100000; #5 minute timout
	

	
            #Add token to the request header
            foreach($key in $headers.Keys)
            {

            switch($key){
            "Content-Type"{
                $request.ContentType = $headers[$key];
            }
            default {
                $request.Headers.Add($key, $headers[$key]);
            }
            }
          

            
            }

            
            $rowsJson = $Body

			$utf8Bytes = [System.Text.Encoding]::UTF8.GetBytes($Body)
			$request.ContentLength = $utf8Bytes.Length
			$postStream = $request.GetRequestStream()
			$postStream.Write($utf8Bytes, 0, $utf8Bytes.Length)
			#Write-String -stream $postStream -string $JSON
			$postStream.Dispose()
		
			try
			{
			  #[System.Net.HttpWebResponse] $response = [System.Net.HttpWebResponse] $request.GetResponse()
			  $response = $request.GetResponse()
			}
			catch
			{
			  $response = $Error[0].Exception.InnerException.Response; 
			  Throw "Exception occurred in $($MyInvocation.MyCommand): `n$($_.Exception.Message)"
			}
		
			$reader = [IO.StreamReader] $response.GetResponseStream()  
			$output = $reader.ReadToEnd()  
		
			$reader.Close()  
			$response.Close()
			return $output  
			
			

}