I'm using equations for the first time, and it isn't working. I'm wondering if I'm doing something wrong, or that SW has a bug. It won't evaluate even the simplest equation. I get the green checkmark after entering a equation, but when I try to click OK I always get a syntax error. I have no clue what I'm doing wrong, or why it isn't computing. Below a sample of what I've been trying to do. The cursor never moves to the 'evaluates to' column.

I'm using SW15 on Windows 8.1 (64x) btw.

Thanks in advance.