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Do this one. The default object will always update to reflect the class definition (I’m pretty sure, please correct me if I’m wrong) as default objects don’t save values, they just point to the class definition. To get around the second problem, always have a parent class that is “virtual”, meaning that only child objects are ever actually created and used. Then you can use the default parent object as “null”. Having a virtual parent class is very useful for lots of other reasons, so it is usually good to put it in regardless. — James PS, here is your example, modified to make “Config” a virtual parent, overridden by a ConcreteConfig class, and eliminating the DVR: Aggregation Discussion with virtual parent.zip

When working with code that uses LVOOP property nodes, debugging becomes difficult because there is no easy way to go to the accessor code that runs when the property node executes. So in order to alleviate this I created the Property Popper. Run this floater helper VI (leave running during development) When you want to get to an accessor, select the property node Click 'Get Properties' on Pop Property.vi Double click on the property you want to get accessor access to Enjoy ~,~ The Captain was here See Video Detailing this <!-- copy and paste. Modify height and width if desired. --> <object id="scPlayer" width="892" height="708" type="application/x-shockwave-flash" data="http://content.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/jingh264player.swf" > <param name="movie" value="http://content.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/jingh264player.swf" /> <param name="quality" value="high" /> <param name="bgcolor" value="#FFFFFF" /> <param name="flashVars" value="thumb=http://content.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/FirstFrame.jpg&containerwidth=892&containerheight=708&content=http://content.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/2012-01-10_1033.mp4&blurover=false" /> <param name="allowFullScreen" value="true" /> <param name="scale" value="showall" /> <param name="allowScriptAccess" value="always" /> <param name="base" value="http://content.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/" /> <iframe type="text/html" frameborder="0" scrolling="no" style="overflow:hidden;" src="http://www.screencast.com/users/NJKirchner/folders/Jing/media/e7471e93-bf0b-4801-b050-8e7c58d7a0fc/embed" height="708" width="892" ></iframe> </object> pop property.vi

Use the Flatten To String primitive and take the name off the front. The details of doing this are posted somewhere on LAVA... I forget where. Try searching the OO category for "flat format".

FOR THE NTH TIME: THERE IS NO GARBAGE COLLECTOR IN LABVIEW.