2 Replies Latest reply: May 23, 2016 11:36 PM by Harinder Bakhshi RSS

    Evaluating a variable as a field name



      Another Newbie Question.


      I am trying to build up an expression to use a variable to select a field for a graph axis.  (I previously did this using a separate inline table to make the selection but the performance was not good.)


      To start with, I have set the variable in the load script thus:


      SET vMasking = 'Masked Mean Packet Delay (ms)';


      Then I want the graph to select its axis based on the value of the variable, so I want the graph to be the:


      Avg[Masked Mean Packet Delay (ms)]


      But I want it to take the value from the variable, so I can change that later


      I've tried Avg($(vMasking)) among other things, which doesn't work.