# HTTP proxy &{} header

**URL:** <https://forum.alumio.com/t/http-proxy-header/1131>\
**Category:** HTTP Proxies\
**Created:** [May 30, 2024, 12:30pm UTC](https://forum.alumio.com/t/http-proxy-header/1131 "2024-05-30T12:30:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rolf](https://forum.alumio.com/letter_avatar_proxy/v4/letter/r/94ad74/32.png) [@rolf](https://forum.alumio.com/u/rolf)\
**Post date:** [May 30, 2024, 12:30pm UTC](https://forum.alumio.com/t/http-proxy-header/1131/1 "2024-05-30T12:30:35Z")

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Hello,

I’m trying to put a &{} variable in the header of a http proxy but somehow i can’t get it to work. So i was wondering if it is even possible to use an &{} variable in the header of a http proxy?

Some additional info:  
The &{} I’m trying to add is created in the “Transform request data” processor.

Thanks in advance!

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<div class="post-metadata">

**Author:** ![r.candrian](https://forum.alumio.com/user_avatar/forum.alumio.com/r.candrian/32/235_2.png) [@r.candrian](https://forum.alumio.com/u/r.candrian)\
**Post date:** [June 4, 2024, 9:20am UTC](https://forum.alumio.com/t/http-proxy-header/1131/2 "2024-06-04T09:20:42Z")

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Hi @rolf,

Thank you for contacting Alumio support. Unfortunately, it’s not possible yet to add dynamic variables to your HTTP proxy headers. Could you please let us know whether this is blocking your integration?