First check which one is greater and then subtract. I'm not sure what you're trying to do ultimately. Could you please explain the problem you are trying to solve?
Firstly, in my opinion, you could just use a single get time stamp for both of the time stamps, and if you need the difference, you could use it after doing a simple greater than equal to and select. Still not sure what you're trying to achieve, with this code. Is it that do you want to see how much time has elapsed from a particular reference?
I kind of agree with Boone, but the subtract is already improved since timestamps were introduced. The difference between the two time stamps is positive, but it shows something like 1 month, -11 days, 6h, 7min, 33s.
The -11 days is a bit special...
I think the time cluster is just handled like a normal cluster in your LV version (what LV version do you use?), doing element-weise subtract. In newer LV versions timestamps are automatically converted into DBL (second counter) when subtracting.
You can just convert both timestamps to DBL before the subtraction or convert the result to DBL and you should get the difference in seconds.
