OLC - How to auto populate learning department value for Publisher field in Self-Paced Learning

Summary:

Need to auto populate "learning department" value for "Publisher" field.

Content (please ensure you mask any confidential information):

When we start creating Self paced learning, "Publisher" field is mandatory field and currently other values for this field is not showing in drop down due to some issue/bug(Checked via Manage Common Lookups
, ORA_WLF_Publisher).

So, as of now we wanted to auto populate "learning department" value for "Publisher" field, which is the only value showing for this field. Anyone knows how to achieve this via VBCS. What is the expression/code we need to use.

Version (include the version you are using, if applicable):