.NET usercontrol code-behind not rendering inside XSLT Umbraco macro
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I have a XSLT macro that renders some markup and .NET usercontrol macros in a loop. So thats multiple usercontrol macros inside a xslt macro:

    <xsl:for-each select="$node/* [@isDoc]">
    //Some markup etc...
      <xsl:value-of select="umbraco.library:RenderMacroContent('&lt;?UMBRACO_MACRO NodeId=&quot;@id&quot; macroAlias=&quot;LogTag&quot;&gt;&lt;/?UMBRACO_MACRO&gt;', @id)" disable-output-escaping="yes"/>
    </xsl:for-each> 

The markup from the usercontrols markup is rendered just fine, but everything in the `Page_load` is not executed. Why is that? 

Heres the usercontrol markup:

    <div class="logTag" id="Tag" runat="server">
          <img src="someimage.png" alt="image"/>
    </div>
And code-behind:

    public int NodeId { get; set; }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)return;

        var tools = new Tools();
        var userId = (Int32)Membership.GetUser().ProviderUserKey;
        Tag.Visible = tools.GetLog(NodeId, userId);
        Response.Write("Node=" + NodeId + " - User=" + userId + "<br />");
    }

 Neither the Response.Write or Tag.Visible is working. I've tried testing the usercontrol macro directly on a blank - works fine! Is this not possible, or am I doing something wrong?