X++ Code to Insert image for an Item in Ax 2012

Note : The below Code is works for Only released Products

static void insertimage(Args _args)

{

    DocuActionArchive               docuActionArchive;

    EcoResProductImageManagement    productImageManagement;

    EcoResProductImageThumbnail     ecoResProductImageThumbnail;

    DocuRef                         docuRef;

    DocuValue                       docuValue;

    EcoResProductImage              ecoResProductImage;

    InventTable                     inventTable;

// Specify the display product number

    InventTable = InventTable::find("D0004");

    ttsBegin;

    docuRef.TypeId     = "File";

    docuRef.RefTableId = inventTable.TableId;

    docuRef.RefRecId   = InventTable.RecId;

    docuRef.RefCompanyId = inventTable.dataAreaId;

    docuRef.ActualCompanyId = curext();

    docuRef.insert();

    docuActionArchive = DocuAction::newDocuRef(docuRef);

    docuActionArchive.add(docuRef,"C:\\Users\\radhika.j\\Desktop\\download.jpg");

    ecoResProductImage.RefRecId         = docuRef.RecId;

    ecoResProductImage.RefRecord        = docuRef.RefRecId;

    ecoResProductImage.FileName         = "download.jpg";

    ecoResProductImage.Usage            = EcoResProductImageUsage::External;

    ecoResProductImageThumbnail         = new EcoResProductImageThumbnail(false);

    ecoResProductImage.MediumSize       = ecoResProductImageThumbnail.generateThumbnail(204,204,docuRef);

    ecoResProductImage.ThumbnailSize    = ecoResProductImageThumbnail.generateThumbnail(48,48,docuRef);

    if (ecoResProductImage.MediumSize == connull())

    {

        info("@SYS301935");

    }

    if (ecoResProductImage.ThumbnailSize == connull())

    {

        info("@SYS301936");

    }

    ecoResProductImage.insert();

    ttsCommit;

}

Note: if you face any error like "Document management directory does not exist." while doing this 
just go with fix errors select the New Path For Active Directory and Proceed Forward