# Add a field when a match between an external dictionary and a field from a filebeat document occurrs **URL:** \ **Category:** Beats\ **Tags:** filebeat\ **Created:** [May 17, 2022, 7:23am UTC](https://discuss.elastic.co/t/add-a-field-when-a-match-between-an-external-dictionary-and-a-field-from-a-filebeat-document-occurrs/304894 "2022-05-17T07:23:55Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ElasticLiver](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/elasticliver/32/64869_2.png) [@ElasticLiver](https://discuss.elastic.co/u/ElasticLiver)\ **Post date:** [May 17, 2022, 7:23am UTC](https://discuss.elastic.co/t/add-a-field-when-a-match-between-an-external-dictionary-and-a-field-from-a-filebeat-document-occurrs/304894/1 "2022-05-17T07:23:55Z")
Hi, in filebeat can I add a field when a match between an external dictionary and a field from a filebeat document occurrs? Im already doing this with an ingest pipeline and an enrich proccesor, but the ingestion is to slow, and I got others pipelines from logstash running, so I wash thinking maybe I can use the filebeat machine power to do this. For example in logstash I can create an external dictionary that check if a field match with the key, and add a field with the value of the dictionary ```auto def register(params) end def filter(event) dic = { 1 => "tcpmux ", 2 => "compressnet", 3 => "compressnet " }; event.set('new_field', dic[event.get("incoming_field")]) return [event] end ``` It is posible something similar in filebeat? Thanks! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 14, 2022, 9:24am UTC](https://discuss.elastic.co/t/add-a-field-when-a-match-between-an-external-dictionary-and-a-field-from-a-filebeat-document-occurrs/304894/2 "2022-06-14T09:24:20Z")
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