Escaping cannot be mixed with values

Hello,

I am new to Scala and tried some of the XML examples I found on the net.
One of the examples I began was the "phonebook3" example changing the  
phone number. I noticed the example did
not work as I expected so I replaced the XML literals to Elem  
construction style - to get a correct syntax highlighting in JEdit -  
and this is the part I have a problem with:
---------------------
        else // was present and changed
           /* original XML literal style code:
            <entry>
              <name>{ Name }</name>
              <phone where={ Where }>{ ch2 }</phone>
            </entry>
            */
              Elem(null, "entry", Null, TopScope,
                /* Elem(null, "name", Null, TopScope, Text(Name)),   
<- this I could not used together with escaping ch2 */
                  ch2:_*)
-------------------

The original code attempts to replace the <phone ...> entries but  
instead embeds the changed <phone ..> entries represented by 'ch2'  
within a 'dummy'  <phone...> entry. The solution to the problem would  
seem to uncomment the line before the last
-------------------
/* Elem(null, "name", Null, TopScope, Text(Name)), */
-------------------

but then I recieved an error message saying:
-------------------
/phonebook3.scala:59: escaping cannot be mixed with values     ch2:_*)
-------------------

True, I wanted to place a name entry followed by the sequence of the  
new phone numbers stored in 'ch2'.

Can someone help a beginner how to  solve this  ?

regards,
Balazs