# Logstash translate plugin
**URL:** https://discuss.elastic.co/t/logstash-translate-plugin/46131
**Category:** Logstash
**Created:** [April 2, 2016, 12:02pm UTC](https://discuss.elastic.co/t/logstash-translate-plugin/46131 "2016-04-02T12:02:06Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@brain](https://discuss.elastic.co/u/brain)
#### Post date: [April 2, 2016, 12:02pm UTC](https://discuss.elastic.co/t/logstash-translate-plugin/46131/1 "2016-04-02T12:02:06Z")
with the translate plugin, are the fields in the dictionary a strict/exact match, or will a "contains" also match?
so if my yaml file had something like:
"[blah.com](http://blah.com)" : "true"
would a log line with [www.blah.com](http://www.blah.com) also match? if not can I do something like \*.blah.com in the yaml file?
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### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [April 2, 2016, 6:12pm UTC](https://discuss.elastic.co/t/logstash-translate-plugin/46131/2 "2016-04-02T18:12:10Z")
As this is a Logstash question rather than an ES question I suggest you edit your post and change the category to Logstash.
As for your question, have a look at the translate filter's [`regex` option](https://www.elastic.co/guide/en/logstash/current/plugins-filters-translate.html#plugins-filters-translate-regex).
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### Author:  [@brain](https://discuss.elastic.co/u/brain)
#### Post date: [April 3, 2016, 1:21am UTC](https://discuss.elastic.co/t/logstash-translate-plugin/46131/3 "2016-04-03T01:21:22Z")
ah, thanks. its been a long day! 🙂
i've tried; "\.blah\.com": "true" but its not giving me the results i expect.. is there any documentation on what the regex should look like?
i've also tried "/(?i)\.blah\.com$": "true", however it complains about the first . being an unknown escape character?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 5:04am UTC](https://discuss.elastic.co/t/logstash-translate-plugin/46131/4 "2017-07-06T05:04:14Z")