instance.bind

You can bind operation fields to variables specified in the instance.spec property of the service that implements the operation.

<!-- The value of the domain field - a string -
     is used to select the node where the
     Sequencer service is instantiated  -->

<service name="Sequencer" 
  provision="sequencer">
  <prop name="instance.spec" 
    content-type="text/x-erlang" 
    Domains="foo"><![CDATA[
#{
 domains => Domains
 }.
  ]]></prop>
</service>
<notify name="myNotify" 
  service="Sequencer" 
  fields="domain">
  <prop name="instance.bind" 
    Domains="domain"/>
</notify>