Vanish cache won't start due to file storage option

Hi guys I have varnish 4.0 installed on my centos 7 box, my params file looks like this:

RELOAD_VCL=1

VARNISH_VCL_CONF=/etc/varnish/default.vcl

VARNISH_LISTEN_PORT=80

VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1
VARNISH_ADMIN_LISTEN_PORT=6082

VARNISH_SECRET_FILE=/etc/varnish/secret

VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin

VARNISH_STORAGE_SIZE=5G

VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}"

VARNISH_TTL=120

VARNISH_USER=varnish
VARNISH_GROUP=varnish

      

        
        
        
      

    

When I run my varnish I get the following error:

Unit varnish.service has begun starting up.
varnishd[14888]: Error: (-sfile) "${VARNISH_STORAGE_FILE}" does not exist and could not be created
systemd[1]: varnish.service: control process exited, code=exited status=2
systemd[1]: Failed to start Varnish Cache, a high-performance HTTP accelerator.

      

        
        
        
      

    

The owner of the files is varnish, I ran out of ideas how I can get this to work.