In this elastic search link: https://www.elastic.co/guide/en/watcher/2.3/input.html#input-search it specifies how to get a field value from a particular hit and it provides an example if we want to get the value of message field from the first hit (see image below).
That is clear. Nevertheless if i do not want the message field only from the first hit but i want the message field from all hits what should i enter instead of 0 ??? (see image again number 2)