Hi thiagopimenta,
I think that both < and > in your string are XML reserved character and they will not be acceptable by XOG.
You may need to change < (less than sign) to < and > (greater than sign) to >.
There is some other XML reserved character and if you need to use them in XML, you may need to change them.
< <
> >
& &
' '
" "
I changed your string as below and it worked in my test.
(Before)
<![CDATA[$ {Var}]]>
(After)
<![CDATA[$ {Var}]]>
I hope it will resolve your issue.
Regards,
Shoichi