I'm adding a custom context menu item to documents (and not folders) in a SPDocumentLibrary list in SharePoint. The following code works, but always adds my custom menu item at the top of the context menu, which I don't want. I was guessing that the final parameter in CAMOpt was a sequence number that would define the order, but it doesn't seem to have any effect. Does anyone know if it's possible to add a custom context menu item to the bottom on the list?

```
function Custom_AddDocLibMenuItems(m, ctx) {
    var otype = currentItemFSObjType = GetAttributeFromItemTable(itemTable, "OType", "FSObjType");
    if (otype != 1) {
        var itemId = GetAttributeFromItemTable(itemTable, "ItemId", "Id");
        var listId = ctx.listName;

        var action = 'Go_To_Page("' + ctx.HttpRoot + '/_layouts/custom/PAGES/mycustompage.aspx?ListId=' + listId + '&ListItemID=' + itemId + ');';
        CAMOpt(m, 'Custom Menu Item', action, '/_layouts/custom/IMAGES/action.gif', '', 110);
        CAMSep(m);
    }
    return false;
}

function Go_To_Page(page) {
    window.location = page;
}

```