Case Switch Flow Variable Problem

Hello,

In the description of the case switch end node, it says that for existing flow variables, regardless which branch is active, the case switch end will always collect the value from the top branch. Since it always collect from the top branch, then if I modified an existing flow variable within the case switch, the case switch end might not capture this change. I am wondering is there any way to fix this or are there any alternative nodes that do not have this issue?

Thank you.