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I just realized I'm about to hit 500 posts on LAVA. I would have probably preferred if #500 was a deep treatise on some esoteric feature of LabVIEW that will change the programming world as we know it. But we all know that ain't happening anytime soon. Maybe post #1000... So instead, I would just like to express my heartfelt thanks to all of you here at LAVA. To those of you who have helped me out over the years (and will hopefully not tire of helping me out in the future). To those of you whose irreverent words have made me laugh out loud at some inappropriate times. To those of you who ask questions and make me think outside of my own little programming box. And of course, to the (real) Moderators who keep the Wonderful World of LAVA going. I love all you guyze!! Cat

(For those outside the US, you can see the original commercial .)

This is a cross-post from the Dark Side - I've searched for a while without finding any definitive discussion on this topic, so please post your thoughts over there.

When processing an array of SubVI references, I always pass each of them through this VI (included in LabVIEW 8.6 and later...prior versions require the VI Analyzer Toolkit to be installed): vi.lib\addons\analyzer\_analyzerutils.llb\VIAnUtil Valid SubVI.vi This VI will return FALSE if the SubVI reference is an Express VI or a "?" missing subVI. It returns TRUE otherwise. -D