Logic and arithmetic functions on "XML parse" file
I know how to use some arithmetic function (on a parse xml file), like SUM.
But i want to do: "lread - duration" or "lread x duration"
Also i need to know when "lread" is different/equal to "duration", It's possible to use logical expression? like:
@binary: IF lread == duration then 1 else 0
I hope anyone can help me