How to open a popup based on tag value?

Ignition
21

Thanks… silly me… EDIT: Truly a Homer Simpson dropped the donut situation!

22

Did they remove the ability to open windows from Tag Value Changed scripts? Tried doing something similar on a tag event script and looks like system.nav calls within it don't exist anymore...

Error executing script.
Traceback (most recent call last):
File "tagevent:valueChanged", line 4, in valueChanged
AttributeError: 'com.inductiveautomation.ignition.common.script.Imm' object has no attribute 'nav'

MBStat = system.tag.read("[default]MOGAS/V12/Mass Balance Violation Status").value
	if MBStat > 1.5:
		window = system.nav.openWindow('Popups/Check Mass Balances')
		system.nav.centerWindow(window)
	else:
		system.nav.closeWindow(window)
23

NOTE: It appears you can't open windows from gateway event tag scripts or value change scripts. However, you can do this from client tag change event scripts within vision.