I am having an issue with the PROD function in one of my rules. The two PROD functions you see on the right in the image below are always returning 0. You can see that the PROD function I have selected should return 6.0 based on the data in the pane to the left. All of the properties other than Category are defined as decimal numbers. The weird thing is that I copied and pasted the function from another section of the rule and that function is returning 6.0 as expected. I've also tried deleting the function and recreating it. Any ideas on how to get this to work?