upading the linux env variables in ES

I have added the missing variable in /etc/profile.d/microfocus.sh file and its now reflecting on the system, however since the job is being processed through JCL  and the variable is not reflected under Microfocus Environment Variable, t Upon my testing on test environment, I see that , the Microfocus Instance restart can get the newly defined environment variable to get reflected on the Microfocus Environment variable list.
Could you confirm if Instance restart is the only way or if there is any other solution