How to insert function nodes in routing service xsl mapping?

I have been struggling with this for some days now.
I have requestId, versionNumber coming in as a part of xml.
I accept this xml(xsd) in one routing node, But on the way out, I want to assign a value requestId+versionNumber(basically concatenate)+randomNumber to transitionId(a new variable).
How do I introduce this function node in xsl mapping that can concatenate different values that come through?
Also, how do I generate random numbers?
Thanks in advance,
vena

This is fairly straight forward.
First of all create a random number. You can do this inyour translation. On the Component Palette select Advanced Functions. There you have an option generate-id or generate-guid. Either of these will be unique. Drag this to the middle.
You can now drag this to the transactionid. Now you need to create a concatanation. In the Component palatte go to String and drage concat to the middle. Create a link between this concat and the generate-id function. Now you should be able to drag an link from requestid and versionNumber to the concat. If if they are in the wrong order just cut and past in the code by double clicking the concat icon.
Hope this helps
cheers
James

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