Learner Completion Alert to Learn Admin

Summary:

When learner completes the training, the alert notification(Email) should also trigger to respective Learn Admin.

Content (required):

When the training is assigned to learner and when completes it, the alert notification(Email) should trigger to respective Learn Admin.

As though "CC" function is not available in OLC.

Currently for learner and his Manager we are using below Expression, So that the separate Alert notification(Email) is going to Both Learner and his Manager when completed the Training.

Same way, I wanted to know, what is the "Expression/Variable" i need to use, so that the alert notification(Email) also trigger to Respective learn admin of the training.