Use an event structure to key in on the value change of A. In it, you do the math and update B with a local variable. Do the same thing with the value change of B to update A.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
