# Custom index user data
**URL:** https://discuss.elastic.co/t/custom-index-user-data/12526
**Category:** Elasticsearch
**Created:** [June 24, 2013, 4:37pm UTC](https://discuss.elastic.co/t/custom-index-user-data/12526 "2013-06-24T16:37:50Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Ivan](https://discuss.elastic.co/u/Ivan)
#### Post date: [June 24, 2013, 4:37pm UTC](https://discuss.elastic.co/t/custom-index-user-data/12526/1 "2013-06-24T16:37:50Z")
Hello all,
Trying to figure out what would be the best way to get the last
modification date from an elasticsearch index.
I can store this data via user data in the Lucene index. The Engine module
should be pluggable, so I can subclass the existing RobinEngine and commit
my own user data, but the issue is returning the values.
IndexStatus/IndexShardStatus are not pluggable, so I would need to create a
whole new request/response family, which is too much work.
Is there a better way to get the last modification date?
If not, would using user data be the best solution? I can create a patch,
but I would hate to see a pull request ignored.
Cheers,
Ivan
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 2:29am UTC](https://discuss.elastic.co/t/custom-index-user-data/12526/2 "2017-07-06T02:29:43Z")