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I do this all the time in PADS Logic and it is really simple. I have generic R1206 and C1206 components, so I can start the layout before the final values are defined. Later I define the values in Logic, and then pass the attribute changes to Layout.
Hopefully we'll both learn something about how DxD supports this...
This works fine for the passive resistors and capacitor parts, until you add the advanced variant manager feature. As most customers do not use this feature, they should not experience an issue.
Reference Designs - Mentor Graphics - eewiki - Check out the LM3552
The LM3552 is described in http://www.ti.com/tool/lm3552sdev a 1A White LED Driver with Flash Timeout Protection. It is a single page schematic drawn with generic resistors and capacitors where the values were assigned on the schematic page.
Do you use Databook? It can enhance this process. Or try the new www.PartQuest.com beta to drop unique fully attributed symbols into a dropbox partition. See how it's done at: Downloading Passive Symbols from PartQuest