ForEach

Stamp Expressin

Case of using number

stamp("..", "FORVALUE",0)

Case of using Group mask

opdigits(stamps("..", "FORVALUE",""))

With Multiparm Block Parameter(list) -case you want to set specific parameter at each cycle

Expression

ch("../parm" + stamp("..", "FORVALUE",0) )

*Example -to get bunch of transform information

Create Operator Path parameter under a Multiparm Block Folder

Add Transform inside ForEach and set Expression on every transform parameter

Add inverted version of Transform

ch( chs("../parm" + ch("v") ) + "/tx" )
chs("../numrange2") - stamp("..", "FORVALUE",0) + 1 <=This is custom "v" means version
check invert

Set Switch for invert or not

This example can be digital asset and named "xformCollection"

then you can ran shelf script of below deep inside geometry nodes

sel = hou.selectedNodes()

if len(sel) == 1:

curPath = sel[0].parent()

pos = sel[0].position()

path = curPath

xpaths = []

while path.path() != '/obj':

xpaths.append(path.path())

path = path.parent()

print xpaths

xcol = curPath.createNode("xformCollection")

xcol.setPosition(pos + hou.Vector2(0,-1))

xcol.parm("xforms").set(len(xpaths))

for i in range(0,len(xpaths)):

xcol.parm("xform" + str(i + 1)).set(xpaths[i])