I'm still interested in fiddling with the bone length by non-scaling means (not so much for this book-stack now, but for a few other things) so I'll check out RedPhantom's and primorger's suggestions.

Firstly RedPhantom's, so back to that V4 lengthen legs in the Morphs++.

LegsLength.pz2, which is the pose file that injects the morph, is simply this (hoping the forum software doesn't screw up the formatting):

{
    version
    {
        number 4.01
    }

    readScript ":Runtime:libraries:!DAZ:Victoria 4:Deltas:Morphs++:InjDeltas.SCLLegsLength.pz2"
}

The pose file called up by the readScript,InjDeltas.SCLLegsLength.pz2, is this:

{
    version
    {
        number 4.01
    }
    actor BODY:1
    {
    channels
        {
        valueParm SCLLegsLength
            {
            name LegsLength
            hidden 0
            interpStyleLocked 0
            }
        }
    }
    actor bodyMorphs:1
    {
        channels
        {
        targetGeom SCLLegsLength
            {
            name LegsLength
            hidden 0
            interpStyleLocked 0
            indexes 0
            numbDeltas 0
            deltas 
                { 
                } 
            blendType 0
            }
        }
    }
}

Not sure what the SCL stands for, but it's in the same place in the file/valueParm/targetGeom names as FBM (Full Body Morph), PBM (Partial Body Morph), etc would be - can anybody enlighten me ?

Since the targetGeom SCLLegsLength has no actual morph target (zero deltas) I'm guessing that it works via some ERC in the thighs and shins - off to have a look at that...

---

The 3Dcheapskate (also available in DAZ and HiveWire3D flavours) occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.