No, I only replace the flow 1 with flow 2. It means, the original process has a product flow name flow 1, and I set a new flow in flow folder name flow 2, and add flow 2 in the output of the process, set flow 2 as quantitative reference, and remove flow 1, come out a process only has flow 2 as its product flow. And finally, I run calculate get a zero result.