Using external Variables between proxies in OSB

Hello there,
Im trying to figure out if it is possible, to store some kind of message (could be payload, XML, or just a string) to an external variable so it could be reused among different proxies. Anyone knows if this is possible, and if yes, how can it be implemented? I have seen in "The Definitive Guide to SOA: Oracle Service Bus, Second Edition" an approach with xquery, but im not sure if that is helpful: +"OSB has the ability to store XQuery, WSDL, XML Schema, XSLT, WS-Policy files, and more as reusable resources. The ability to store these resources (sometimes referred to as assets or artifacts) along with proxy services makes OSB a lightweight service repository. It's certainly a best practice to reuse these resources whenever possible."+
Thank you in advance

As I said in my previous post, my case is this: I would like to be able, to have a common variable that I would be able to assign inside one proxy, and used from another proxy. I don't know if it can be implemented. Calling from one proxy to another in order to pass the variable is not my case. One scenario is that one proxy will be able to save in runtime a value in an external variable and another proxy would be able to use it. By saying :+"You can definitely reuse them without any problem, but you can hardly put any value into them from proxy service (in runtime)."+ you mean that I can have an external variable pre-assigned, but I will not be able to update in runtime? Is this 100% sure?
Thank you for your quick answer.
Edited by: nkod on Dec 4, 2009 5:23 AM

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