Hi, everyone,

I can't get to make .SetContainer work.

I'm doing this through a python tag, file attached.

I looked everywhere, and I've seen the code on a few websites, I don't understand why it's not working.
Is there a change I've missed?
custom-gui.c4d
My goal is to make the element selected so that I can use this component to make a sort of quick selector between objects.

import c4d
from c4d import gui
from c4d import documents

def MkUD(Object):
    children = Object.GetChildren()
    count = len(children)
    bc = c4d.GetCustomDataTypeDefault(c4d.DTYPE_LONG)
    bc.SetString(c4d.DESC_NAME, 'Objects')
    bc.SetInt32(c4d.DESC_CUSTOMGUI, c4d.CUSTOMGUI_CYCLE)
    cycle = c4d.BaseContainer()
    cycle.SetString(0, 'si')
    cycle.SetString(1, 'sai')
    print (cycle)
    bc.SetContainer(c4d.DESC_CYCLE, cycle) # I can see the UD when I comment this line
    Object.SetUserDataContainer([c4d.ID_USERDATA, 1], bc) # but nothing inside...

def main():
    obj = doc.SearchObject("Null")
    MkUD(obj)
    c4d.EventAdd()

I get:

<c4d.BaseContainer object at 0x000001DF3FF609C0>
Traceback (most recent call last):
  File "Python", line 20, in main
  File "Python", line 15, in MkUD
TypeError: an integer is required (got type set)
>>> 

I'm on R25
Thanks for your help, so frustrating.