I know about
import com.onresolve.scriptrunner.runner.util.OSPropertyPersister
def pluginSettings = OSPropertyPersister.getPluginSettings()
def key = "key"
def value = "my-value"
// save value against key
pluginSettings.put(key, value)
// retrieve value for key
def savedValue = pluginSettings.get(key)
But is there any other way to store data for later use in scripts? For example suppose I have a counter which is incremented for a specific kind of issue and I want to read it later...