Currently, there is no function call to set an alias. We generally distinguish between configuration and programmatic actions, which is consistent with most customer needs.
If you feel that you have a need for this, please send me more information directly by going to www.ni.com/ask and filling out a request for email support. Address the email to me and include any info regarding your intended use case. Why is it important to you, what you want it for, and what feature(s) would be most important to you. I can't guarantee we will add it, but I'd like to know more about your needs.
Ray K
NI Applications Engineer