I have lines with multiple properties on each (such as Temperature Pressure FlowRate).  I'd like to use a function on each line label to display the value of only one of the properties at a time based on a global Page property "ShowProperty". 

So let's say the Page variable "ShowProperty" currently has the value "Temperature".  I'd like to be able to display the line property "Temperature" value based on the Page variable directly.

In Javascript the code I'm trying to replicate would look like this THIS[PAGE.ShowProperty] would be currently equivalent to THIS.Temperature.

If Page.ShowProperty was set to "Pressure" then THIS[Page.ShowProperty] would be equivalent to THIS.Pressure...

I'm currently using a series of nested IF statements and it's not very elegant. IF(PAGE.ShowProperty = "Temperature"THIS.TemperatureIF(PAGE.ShowProperty="Pressure"THIS.PressureIF(.....)))