PR update api not working

Hello please help me with update PR api
i want to give random pr reviewer via trigger pull-request in pipeline
this api dont work
problem with that line -d “{reviewers”:“${ACTIVE_REVIEWERS}”}"
if i deliver ‘’ its working
curl https://api.bitbucket.org/2.0/repositories/${BITBUCKET_REPO_OWNER}/${BITBUCKET_REPO_SLUG}/pullrequests/${BITBUCKET_PR_ID}
-s -f -S -X PUT
-H “Content-Type: application/json”
-H “Authorization: Bearer ${BB_TOKEN}”
-d “{reviewers”:“${ACTIVE_REVIEWERS}”}"