Adding the header from one document to the first page of another document

I am trying to add a header to only the HeaderFooterType.HeaderFirst of the document, but it does not show up. If I place it in the HeaderFooterType.HeaderPrimary it will show up on every page. My code is below

public static Document AddcustomHeaderToReport(Document mainDoc, Document footerOrHeader)
{
    DocumentBuilder builderA = new DocumentBuilder(mainDoc);
    // Copy Header
    HeaderFooter headerToCopy = (HeaderFooter)mainDoc.ImportNode(footerOrHeader.FirstSection.HeadersFooters[HeaderFooterType.HeaderPrimary], true, ImportFormatMode.UseDestinationStyles);

    // Get the Current Primary Header
    HeaderFooter headerPrimaryCurrent = builderA.CurrentSection.HeadersFooters[HeaderFooterType.HeaderPrimary];
    HeaderFooter headerFirstCurrent = builderA.CurrentSection.HeadersFooters[HeaderFooterType.HeaderFirst];
    HeaderFooter headerEvenCurrent = builderA.CurrentSection.HeadersFooters[HeaderFooterType.HeaderEven];

    // Create header if it does not exist.
    if (headerPrimaryCurrent == null)
    {
        headerPrimaryCurrent = new HeaderFooter(mainDoc, HeaderFooterType.HeaderPrimary);
        builderA.CurrentSection.HeadersFooters.Add(headerPrimaryCurrent);
    }

    if (headerFirstCurrent == null)
    {
        headerFirstCurrent = new HeaderFooter(mainDoc, HeaderFooterType.HeaderFirst);
        builderA.CurrentSection.HeadersFooters.Add(headerFirstCurrent);
    }

    if (headerEvenCurrent == null)
    {
        headerEvenCurrent = new HeaderFooter(mainDoc, HeaderFooterType.HeaderEven);
        builderA.CurrentSection.HeadersFooters.Add(headerEvenCurrent);
    }

    // Add nodes from Branding document header.
    foreach (Node node in headerToCopy.ChildNodes)
    {
        // headerPrimaryCurrent.AppendChild(node.Clone(true));
        headerFirstCurrent.AppendChild(node.Clone(true));
        // headerEvenCurrent.AppendChild(node.Clone(true));
    }

    return builderA.Document;
}

Hi
Thanks for your request. I think, you should simply set this property:
https://reference.aspose.com/words/net/aspose.words/pagesetup/differentfirstpageheaderfooter/
If it is false, the primary header is displayed on the first page.
Hope this helps.
Best regards,

Thanks that did it