Meaning#
MD uses expressions, object references, lists, tables and unit-bearing values. An XSD attribute type does not declare the type of event.param. Actions can write variables rather than return Lua values.
Example#
<set_value name="$Amount" exact="12" />What happens: The MD variable $Amount becomes the number 12.
This fragment does not print or write a log message. The values shown are the expected results of the example.