# Variable interpolation when running 'rancher catalog install' from the CLI

**URL:** <https://forums.suse.com/t/variable-interpolation-when-running-rancher-catalog-install-from-the-cli/5835>\
**Category:** Rancher 1.x\
**Created:** [March 13, 2017, 11:02am UTC](https://forums.suse.com/t/variable-interpolation-when-running-rancher-catalog-install-from-the-cli/5835 "2017-03-13T11:02:01Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![neilbmclaughlin](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/neilbmclaughlin/32/2261_2.png) [@neilbmclaughlin](https://forums.suse.com/u/neilbmclaughlin)\
**Post date:** [March 13, 2017, 11:02am UTC](https://forums.suse.com/t/variable-interpolation-when-running-rancher-catalog-install-from-the-cli/5835/1 "2017-03-13T11:02:01Z")

</div>

I want to check that my assumption that variable interpolation is not available when running `rancher catalog install` from the CLI is correct.

When I issue the command:

`gp_finder_docker_image_tag=PR999 rancher catalog install --name test "NHSuk_Staging/c2s-gp-finder"`

I am still prompted for the gp\_finder\_docker\_image\_tag value which suggests to me that interpolation is not happening. The catalog repo I’m using is [https://github.com/nhsuk/nhsuk-rancher-templates/tree/master/templates/c2s-gp-finder](https://github.com/nhsuk/nhsuk-rancher-templates/tree/master/templates/c2s-gp-finder).

If interpolation should work then any clues as to what I’m doing wrong would be appreciated.

Cheers

Neil

Rancher: 1.5.1  
Rancher CLI: 0.5.0  
Docker: 17.03.0-ce, build 60ccb22