Object function in Oracle VBCS

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Hi Team,

I'm creating an Object function under the Business Rules with the below code. The return type I selected as List only. 

def vo = newView('Employee')
vo.appendViewCriteria("firstName = '"+empName+"'")
return vo.executeQuery()

I don't see this object function in the REST Endpoint tab. Can you help how to convert this function as a REST API.

I have already enabled Callable by External System. See the attached screenshot