Magento创建产品与c#不传递数据

我已经浏览了整个stackoverflow和Google示例的工作代码，但无法使其工作:

static bool createProduct(string prodName, string prodDesc, string prodShort, string prodPrice, string prodSku)
{
    catalogProductCreateEntity newProduct = new catalogProductCreateEntity();
    newProduct.name = prodName;
    newProduct.description = prodDesc;
    newProduct.short_description = prodShort;
    newProduct.status = "1";
    newProduct.price = prodPrice;
    newProduct.tax_class_id = "2";
    newProduct.weight = "1";           
    string defaultAttrubiteSetID = "4";
    associativeEntity AdditionalAttributes = new associativeEntity();
    AdditionalAttributes.key = "temando_height";
    AdditionalAttributes.value = "0.2";
    associativeEntity[] AssociativeEntity = new associativeEntity[2];
    AssociativeEntity[0] = AdditionalAttributes;
    newProduct.additional_attributes = AssociativeEntity;
    AdditionalAttributes = new associativeEntity();
    AdditionalAttributes.key = "temando_width";
    AdditionalAttributes.value = "0.1";
    AssociativeEntity[1] = AdditionalAttributes;
    newProduct.additional_attributes = AssociativeEntity;
    try
    {
        mservice.catalogProductCreate(mlogin, "simple", defaultAttrubiteSetID , prodSku, newProduct, null);
    }
    catch (Exception merror)
    {
        lastError = merror.Message;
        return false;
    }
    return true;
}

我已经尝试了"temandoHeight"answers"temandoHeight"的变化，但它们都不适合Magento 1.8

产品的创建没有任何问题，但是上面提到的我尝试的另外两个附加属性都没有被填充。

任何想法?

Thanks in advance