# How to add a random value of timestamp into the header

**URL:** <https://community.gatling.io/t/how-to-add-a-random-value-of-timestamp-into-the-header/5408>\
**Category:** Gatling (Open-Source)\
**Created:** [December 20, 2019, 12:28pm UTC](https://community.gatling.io/t/how-to-add-a-random-value-of-timestamp-into-the-header/5408 "2019-12-20T12:28:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![user6](https://avatars.discourse-cdn.com/v4/letter/u/f1d935/32.png) [@user6](https://community.gatling.io/u/user6)\
**Post date:** [December 20, 2019, 12:28pm UTC](https://community.gatling.io/t/how-to-add-a-random-value-of-timestamp-into-the-header/5408/1 "2019-12-20T12:28:14Z")

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Hello to everyone.

I’m pretty new in the using the gatling and now i’m confused with a question if it possible to add the random value of the timestamp into the header of the request?

For an instance in this way:

val headers\_01 = Map(  
“Client-operation-id” → “timestamp” ) // the “timestamp” is random and new for each user

Thank you in advance