Adding Picture to Excel comment

Hi all, 

my troubles with excel continue sadly. 

Im trying to insert a picture into the background of an Excel comment. 

I can create a comment with text via: 

#####################################################################

## Load excel com objects attach to file

$ExcelPath = 'C:\book1.xlsx'

$Excel = New-Object -ComObject Excel.Application

$Excel.Visible = $true

$ExcelWordBook = $Excel.Workbooks.Open($ExcelPath)

$ExcelWorkSheet = $Excel.WorkSheets.item("Sheet1")

#####################################################################

## Add a comment to Cell

$ExcelWorkSheet.Range("D2").AddComment("Autor Name: `rThis is my comment")

But trying to add the picture im failing. 

using  GM  i thought that filling in the Value field for either of these would work 

$ExcelWorkSheet.Range("D3").Comment.Shape.Fill.UserPicture | gm

$ExcelWorkSheet.Range("D3").Comment.Shape.Fill.BackGround | gm

IE:

$image = "C:\test\Pictures\Kittys\gotyou.jpg"
$ExcelWorkSheet.Range("D2").Comment.Shape.Fill.BackGround.value = $image

but im getting the same error for both:

Exception setting "value": "Cannot set the Value property for PSMemberInfo object of type "System.Management.Automation.PSMethod"."

At line:1 char:1

+ $ExcelWorkSheet.Range("D2").Comment.Shape.Fill.BackGround.value = $image

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [], SetValueInvocationException

    + FullyQualifiedErrorId : ExceptionWhenSetting

Apparently this will work in VB

Sub Insert_Comment_Add_Background_Picture()
'Macro to insert a comment in cell A1 and then set a picture or photo as the background for that comment

Range("A1").AddComment ("Comment text goes here.")

Range("A1").Comment.Shape.Fill.UserPicture "C:\image.jpg"

End Sub

Any suggestions?