How to display a BPEL variable using Java Embedding

Hi, hope someone can help, I'm sure this is something very simple but for the life of me can't seem to find it through the tutorials including the Dev guide.
Question
=======
How can I display user defined and BPEL variables in the process activity "Java Embedding" ?
ex: System.out.println(bpws:getVariableData("myDatabaseParameterVariable")
This example doesn't work but this is basically what I am trying to achieve.
I would appreciate any help with this.
Rookie

Actually that's all the code I have.... System.out.println(myDatabaseArg);
myDatabaseArg is a simple parameter defined in the database adapter configuration wizard which is used as a criteria to retrieve data.
Just before I invoke the Read I use the Java Embedding to display the content of the parameter.

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