I'm trying to create an expression to create a line graph, in which each line of the graph represents the sales per month of a specific year. I was planning to create such expression gradually, but I'm having trouble even with the simple stuff. What I have right now is
But it's giving me and expression error. What is wrong with this simple statement?
(Btw, I'm finding the Qlik's syntax quite complicated. Is there some sort of expression debugger to help us find out what is wrong with our code? Thanks!)