CKEDITOR in EXT Fieldcontainer

Hi
CKEDITOR whcih is kept inside Ext.Fieldcontainer.
I have Ext button outside the filedcontainer.
I am trying to change the content of CKEDITOR in EXT.Button Click event.But i could not find any change.
Please help..

<ext:FieldContainer ID="fldContainer12" runat="server" LabelAlign="Right" FieldLabel="Observations" MarginSpec="10 0 50 50" Hidden="false"><Content><CKEditor:CKEditorControl ID="ckeditor" runat="server" /></Content> </ext:FieldContainer>
<ext:Button ID="btnEdit" Text="Edit" runat="server" Width="130" MarginSpec="0 0 0 155" Icon="ShapeMoveBack">
<DirectEvents>
<Click OnEvent="btnEdit_Click"></Click>
</DirectEvents>
</ext:Button>