local environments=$(process_env_vars "$ENV_STRING")
local payload="{\"hook_info\":{\"type\":\"bitrise\"},\"build_params\":{\"branch\":\"$BRANCH\",\"workflow_id\":\"$WORKFLOW\",\"environments\":$environments\
}}"
local command="curl --silent -X POST https://api.bitrise.io/v0.1/apps/$PROJECT_SLUG/builds \