The ERC code chunks for Victoria 3 are contained within external files in the !DAZ directory. The Control Figure entry in each ERC chunk is directed to "Figure 1". As such, when an injection is applied, the figure receiving the information is being told to look for direction from the channels in "Figure 1."

By default, Victoria 3 is named "Figure 1"... which is used for producing predictable results, in code, for ERC, NULLS and the like. Each time you load Victoria 3 into a new, blank, scene... in memory she occupies instance 1 (:1). As I stated above, when an injection is applied, the figure receiving the information is being directed to look to "Figure 1" for instructions; which in this scenario is the correct figure. Saving to the library records all the information in a single, albeit larger than the original, file. Stored as "Figure 1" with instances of 1 (:1) in the library, a NULL can then be used to buffer crosstalk (in Poser4, 5 doesn't need the buffer). The "Millennium NULL" works for any figure that uses the groups (identically named) used in a Millennium figure, or any subset thereof... so yes, it'll work for V3.

Basically, what it boils down to is the way Poser assigns [and stores] name and instance information in memory... and subsequently, files. Remember... ERC is a hack, delta injection is a hack, readScript is a hack, NULLS are hacks; all of which give Poser much more functionality than was intended, considered or available from its creators... but hacks nonetheless.

-Rob