This function allows to evaluate directly expressions.
 

1 eval.expr

<eval.expr>
    <expr /> !
</eval.expr>
Example
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<xsql-script name='expr'>
    <body>
        <set name='a'>3</set>

        <println><eval.expr><add><a/>3</add></eval.expr></println>
    </body>
</xsql-script>

Returns:

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