# Regex on a string field with number
**URL:** https://discuss.elastic.co/t/regex-on-a-string-field-with-number/254667
**Category:** Kibana
**Created:** [November 8, 2020, 12:14pm UTC](https://discuss.elastic.co/t/regex-on-a-string-field-with-number/254667 "2020-11-08T12:14:57Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sudersank](https://discuss.elastic.co/u/sudersank)
#### Post date: [November 8, 2020, 12:14pm UTC](https://discuss.elastic.co/t/regex-on-a-string-field-with-number/254667/1 "2020-11-08T12:14:57Z")
I have a timestamp field which will have value as below
log\_timestamp : 11/8/2020#17:21:25:635
The log\_timestamp is a string field. How do i use regex to filter values from
11/8/2020#17:21:22:635 To 11/8/2020#17:21:25:635
I tried with \<2-5\> on that particular character but it isnt working
Any help or direction would be of great help
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### Author:  [@wylie](https://discuss.elastic.co/u/wylie)
#### Post date: [November 11, 2020, 3:41pm UTC](https://discuss.elastic.co/t/regex-on-a-string-field-with-number/254667/2 "2020-11-11T15:41:32Z")
Is there a reason you've parsed it as a string field, instead of a date field? I think it would be easier to handle this using date ranges. [https://www.elastic.co/guide/en/elasticsearch/reference/current/date.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/date.html)
If you still want help with your regular expression, you will need to be more specific about what you've already tried. It's impossible to help with a regex unless we see the actual regex and some examples
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 9, 2020, 3:41pm UTC](https://discuss.elastic.co/t/regex-on-a-string-field-with-number/254667/3 "2020-12-09T15:41:34Z")
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