expr.src

Use this property to add Erlang expressions either to a service or an operation. The content is rendered as a CDATA section.

<prop name="expr.src"
  content-type="text/x-erlang"><![CDATA[
case IsLocked of  
  true ->    
    Error = "Already locked",    
    "Error";   

  false ->    
    NewIsLocked = true,    
    "Ok"
end.
]]></prop>
Important: The expressions list must end with a full stop.