How to extract variable from jsr223 sampler?

Question

Software testing

Using the jsr223 sampler, we managed to find the maximum dynamic value out of 5 possible values ​​previously pulled by the regex extractor.
How now to pull this value and apply it in the next request?
The regexp extractor is working, the screenshot shows that the logic also works, it finds the maximum number.

${maxValue_max} doesn't work.