Welcome to the 
Forum!
Short answer: Sorry, dynamically assigned thresholds (or those that you wish for a user to input) are still a feature request .
Long answer: There are workarounds. See here for an example.
Welcome to the Forum!
Short answer: Sorry, dynamically assigned thresholds (or those that you wish for a user to input) are still a feature request .
Long answer: There are workarounds. See here for an example.