Hello. We're starting down the road of building out support for DeltaV Live from some of our custom Operate solutions, beginning with faceplates. In Operate, we'd use [_NOT_CONFIG_OK_] somewhat liberally to protect from errors being thrown if a faceplate was opened on a module that didn't have a particular datalink's source implemented. And visibility too of course. In Live, I see that I can use the DLSYS.Exists() function to deal with visibility, but what's the best mechanism to reproduce the effect of [_NOT_CONFIG_OK_] for a data source expression? Currently, my context display works fine, but I'd sure prefer it that it didn't cause the operator to see the little broken heart toolbar icon light up when he uses it.
Thanks!
-Daniel
In reply to Daniel Parrish: