Can you use railway variables in the startup command for a cron job

Question

I have a cron service setup with a start command  
curl -X POST <https://$>{{ APP\_URL }}/api/cron/sync -H 'x-cron-secret: ${{ CRON\_SECRET }}' --fail --silent --show-error  
  
But it seems that the APP\_URL and CRON\_SECRET are not getting populated when the command gets executed  
  
This curl is setup as the custom start command on the cron-sync service. If I replace the variables with the correct values the code executes correctly

uxuz · Accepted Answer

Hey, you need to wrap your curl request in a new shell to use environment variables within the start command.

```sh
sh -c "curl -X POST https://${{ APP_URL }}/api/cron/sync -H 'x-cron-secret: ${{ CRON_SECRET }}' --fail --silent --show-error"
```