Hey i have this macro that works great. but i like til to list all child pages of its ancestor and nor from a changeable source.

i use it on this page til lis all item in a category. 

http://hoejdata.dk/produkter/laptop/asus/asus-133/asus-zenbook-ux302.aspx ;

I hope som can help me.

@inherits umbraco.MacroEngines.DynamicNodeContext
@*
    === Macro Parameters To Create ===
    Show:True   Alias:nodeId Name:Node ID    Type:Content Picker
*@


@{
    var startNodeID = Parameter.nodeId;
}

@if (startNodeID != null)
{
    @* Get the start node as a dynamic node *@
    var startNode = Library.NodeById(startNodeID);

    if (startNode.Children.Where("Visible").Any())
    {
        <ul>
            @foreach (var page in startNode.Children.Where("Visible"))
            { 
                <li class="SideSubPage"><a href="@page.Url">@page.Name</a></li>
            }
        </ul>
    }    
}