Color Palette inside Button Menu - Don't load value in page load.

[Sérgio]

First, sorry for the bad english.

I'm using a color palette inside a button menu. This palette has a Ajax Event, who change a label text.
This method work's fine when i select a color. But it's not working in the page load.

The code:

                <ext:Button Text="Selecione uma cor" Icon="Color" runat="server" ID="btnCor"  IsFormField="true" >
                    <Menu>
                        <ext:Menu ID="menuCor" runat="server" RenderToForm="true" >
                            <Items>
                                <ext:Panel runat="server" ID="pnlCor" Border="false" Header="false">
                                <Items>
                                    <ext:ColorPalette   runat="server" ID="campoCor"  PropertyName="Cor"  >
                                        <DirectEvents>  
                                            <Select OnEvent="AjaxColor_Changed" ></Select>    
                                        </DirectEvents>     
                                    </ext:ColorPalette>                                      
                                </Items>
                                </ext:Panel>
                            </Items>
                        </ext:Menu>
                    </Menu>                 
                </ext:Button>
				<ext:Label ID="campoCorSelecionada" AutoRender="true" runat="server" />

        protected void AjaxColor_Changed(object sender, DirectEventArgs e)
        {
            LoadColorLabel(campoCor.Value);
        }
        
        protected void LoadColorLabel(string cor )
        {
            if (!string.IsNullOrEmpty(cor))
            {
                string tpl = "Selected color: #<span style='color:#{0}; font-weight:bold;' >{0}</span>";
                campoCorSelecionada.Text = string.Format(tpl, cor);
            }
        }
		
		protected void Page_Load(object sender, EventArgs e)
		{
			
            if (!string.IsNullOrEmpty(color))
            {
                campoCor.Value = color;
            }
            LoadColorLabel(color);
		}

The page_load don't show the label and not set the value of color palette. And the javascript show this error:

Uncaught type error: Cannot call method 'child' of undefined

[Sérgio]

Thanks for all atention.
The solution: use <paleteName>.render() and <labelName>.render(); after set the values.