ext:Script issue

[AlexMaslakov]

 
<script type="text/javascript" language="javascript"> 
    Ext.net.DirectMethods.<%=ClientID%>.DeleteFile(sourceId, fileName);
</script>

How to replace <%=ClientID%> with #{} syntax?
It doesn't work

 
<ext:XScript runat="server"> 
  <script type="text/javascript" language="javascript"> 
       Ext.net.DirectMethods.#{this}.DeleteFile(sourceId, fileName);
</script>
</ext:XScript>

[Vladimir]

#{} doesn't support 'this'
#{} maps ID to ClientID, so you have to pass ID only

[AlexMaslakov]

I know it.
My question is how to replace <%=ClientID%> in userControl with #{} in order to call Direct method ?