To run constantly

first check what value is set:

run in your browser

yourUrlJenkins/manage/script

put and run

org.jenkinsci.plugins.durabletask.BourneShellScript.HEARTBEAT_CHECK_INTERVAL

after

Create a init.groovy.d folder in Jenkins home and place a groovy file in it for example HEARTBEAT_CHECK_INTERVAL.groovy

add in your file

System.setProperty("org.jenkinsci.plugins.durabletask.BourneShellScript.HEARTBEAT_CHECK_INTERVAL", "300")

restart Jenkins:

yourUrlJenkins/safeRestart

push "yes"

after, you should check what value is set again and voila: