Logic / if

if(condition, trueReturn, falseReturn)

This function evaluates the expression condition, and returns the value of trueReturn or falseReturn depending on the boolean value of condition.

if(1, "Yes", "No") 

...would return "Yes"

if(0, "Yes", "No") 

...would return "No"

if({Root Container.CheckBox.selected}, "Selected", "Not Selected") 

...would return the a description of the state of the checkbox