# How to install AWS rack

**URL:** https://community.convox.com/t/how-to-install-aws-rack/788
**Category:** Rack (Version 3)
**Created:** [October 26, 2020, 5:13am UTC](https://community.convox.com/t/how-to-install-aws-rack/788 "2020-10-26T05:13:21Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![phuongnd08](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.convox.com/phuongnd08/32/57_2.png) [@phuongnd08](https://community.convox.com/u/phuongnd08)
#### Post date: [October 26, 2020, 5:13am UTC](https://community.convox.com/t/how-to-install-aws-rack/788/1 "2020-10-26T05:13:22Z")

</div>

This command no longer work with convox 3:

```auto
convox rack install aws --name production4 VPCCIDR=4.0.0.0/16 Private=Yes Subnet0CIDR=4.0.1.0/24 Subnet1CIDR=4.0.2.0/24 Subnet2CIDR=4.0.3.0/24 SubnetPrivate0CIDR=4.0.4.0/24 SubnetPrivate1CIDR=4.0.5.0/24 SubnetPrivate2CIDR=4.0.6.0/24

```

Showing something like this:

```auto
Error: Unsupported argument

  on main.tf line 13, in module "system":
  13: VPCCIDR = "4.0.0.0/16"

An argument named "VPCCIDR" is not expected here.

ERROR: exit status 1

```

Wonder where to find documents regarding new working syntax of convox? Feeling like getting lost everytime I try doing something with convox one in a while.