PowerShell deploy SSRS with datasource

Question

Hi all I am trying to deploy SSRS using PowerShell as follows which is creating the report but not the datasource. 

I tried the approach from here but not working as expected

https://blogs.infosupport.com/managing-ssrs-reports-with-powershell/#comment-124935

http://hindenes.com/powershell/SQLReporting.psm1

 $ssrsproxy = New-WebServiceProxy -Uri $webServiceUrl -UseDefaultCredential -Namespace "SSRS"  

$proxyNameSpace = $ssrsproxy.gettype().Namespace
$datasourceDef = New-Object("$proxyNameSpace.DataSourceDefinition")

    $datasourceDef.connectstring = $connectString
    $datasourcedef.Extension = $Extension
    $datasourceDef.Enabled = $true
    $datasourceDef.EnabledSpecified = $true
    $datasourceDef.ImpersonateUserSpecified = $false
    $datasourceDef.Prompt = $null
    $datasourceDef.WindowsCredentials = $false

    try
    {
        $ssrsproxy.CreateDataSource($DataSourceName, $path, $true, $datasourceDef, $null)
    }
    catch
    {
        "Error was $_"
        $line = $_.InvocationInfo.ScriptLineNumber
        "Error was in Line $line"
    }