Try putting an equals sign before your variable value:
Then use the variable in your expression the same way you are:
I believe there was a recent discussion on the board that talked about how using an equal sign or not can affect the results. I don't remember the exact details, but it is worth a try.
PS your images work fine when clicked on. I'm not sure if you can make them any bigger in the actual post.
Thanks for the info on the pictures... I didn't realize they were clickable in the post.
As for the variable, I have tried the following variations and nothing seems to work;
Hold on a second... Well you got me looking in the right spot. As it turns out, the = sign must be removed! The correct expression to place in the variable is the following;
And now it all works fine.