Need help to quote value in array

[jmcwork]

Hello I have a problem to quote with "" one value in array

Version YQ
last release ubuntu focal : 4.16.2

Yml file SRC

cat <<EOF > sample.yml
---
all_access:
  reserved: false
  backend_roles:
  - "admin"
EOF

Code

#!/bin/bash

ADMIN_TEAM=toto

v=${ADMIN_TEAM} yq eval '.all_access.backend_roles += [env(v)] | .all_access.backend_roles style="double"' -i ./sample.yml 

RESULT

cat  sample.yml
---
all_access:
  reserved: false
  backend_roles:
    - "admin"
    - toto

User toto added but without double quote :-( ( - "toto" )

Help !!!

[jmcwork]

Find !

v=${ADMIN_TEAM} yq eval '.all_access.backend_roles += [env(v)] | .all_access.backend_roles.[] style="double"' -i ./sample.yml