# Increment environmental variable **URL:** \ **Category:** Question & Answer\ **Created:** [May 29, 2017, 9:51am UTC](https://discuss.bitrise.io/t/increment-environmental-variable/1869 "2017-05-29T09:51:47Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![rafalzawadzki](https://avatars.discourse-cdn.com/v4/letter/r/3ab097/32.png) [@rafalzawadzki](https://discuss.bitrise.io/u/rafalzawadzki)\ **Post date:** [May 29, 2017, 9:51am UTC](https://discuss.bitrise.io/t/increment-environmental-variable/1869/1 "2017-05-29T09:51:47Z")
I tried to increment Bitrise environmental variable from a script with usual bash approach and with envman tool and both seem to increment the variable only in the current build. I suspect it’s related to virtual machine being disposed afterwards… Is it possible to increment Bitrise environmental variable from a script and preserve its value between builds? ---
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [May 29, 2017, 12:36pm UTC](https://discuss.bitrise.io/t/increment-environmental-variable/1869/2 "2017-05-29T12:36:39Z")
Hi @rafalzawadzki , Thanks for asking this here! Closing as a duplicate of: > [@Global variable incremented in every build](http://discuss.bitrise.io/t/global-variable-incremented-in-every-build/1562): > > Hi, I need to create global Bitrise variable like $BITRISE\_BUILD\_NUMBER that will increment in custom step every build. Is it possible? If you’d have any questions feel free to comment there! ---
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [May 29, 2017, 12:36pm UTC](https://discuss.bitrise.io/t/increment-environmental-variable/1869/3 "2017-05-29T12:36:43Z")