Can 8.1 Perspective projects use system tags? i.e., [System]Client/Network/Hostname I keep getting a “null” returned.
Gateway system tags yes, Vision Client system tags no.
The Perspective equivalent for that Client tag would be the host or address session property.
https://docs.inductiveautomation.com/display/DOC81/Session+Properties
So, not this, right?

Nothing in the “Client” folder.
well, dang!
Thanks alot sir
