How to hold a peak value from a fcn block

I am trying to use a peak output value from a fcn block as an input to the fcn block, and I'm struggling.

I need to somehow have an input to the function that is the highest output value from all previous times. When a new maximum output value is calculated, I need the input to change to this value.

I have tried to use "Sample & Hold" and "Min/Max" but these have not worked...

Answer 1

[Mischa Kim]

Richard, use the minmax block (also allows you to reset). E.g.,