No margins at header photo of report using ActXWord

Hi,

I have created a word report using matlab code (ActXWord).

For the header i import a picture, which i would like to have no margins and cover the header from the upper left corner of page.

ActXWord.Selection.Application.ActiveWindow.View.SeekView = 1; % go to header

ActXWord.Selection.ParagraphFormat.Alignment=0; % left allignment

WordHandle.Sections.Item(1).Headers.Item(1).Range.InlineShapes.AddPicture([pwd '\header_photo.png'],0,1);

Before i have set the margins of the main body of report:

ActXWord.Selection.Pagesetup.RightMargin=28.34646 * 2;

ActXWord.Selection.Pagesetup.LeftMargin=28.34646 * 2;

ActXWord.Selection.Pagesetup.TopMargin=28.34646 * 2.54;

ActXWord.Selection.Pagesetup.BottomMargin=28.34646 * 2.54;

That way the header photo is complying to main body margins.

How to set different margins for the header photo of word header without changing the main body margins?

Thanks in advance!