fYPixels
if (from->FindFloat("yPixels", &fYPixels) != B_OK)
fYPixels = 0;
_ParseArg(argv[2], fYPercent, fYPixels);
into->AddFloat("yPixels", fYPixels);
setY = (frame.Height() * fYPercent) + fYPixels;
float fYPixels;