Thanks again.@i_mazlov
I haven't studied C++ yet, but I'm glad to know that it's achievable with C++.

Hello @i_mazlov
Thanks for the reply, and the thoughtful extended reading.

I used the code you provided, but it doesn't seem to change the results.

Hello,
I want to know how to SetKeyframeSelection for subfield

here is my code

import c4d

def main():

    fields = op[c4d.FIELDS]
    first_layer = fields.GetLayersRoot().GetFirst() 
    first_layer_UniqueID = first_layer.GetUniqueID()
    print (f"first_layer_name: {first_layer.GetName()},  UniqueID: {first_layer_UniqueID}" )

    subfield = first_layer[c4d.FIELDLAYER_PROXIMITY_FIELDS]
    subfield_first_layer = subfield.GetLayersRoot().GetFirst() 
    subfield_first_layer_UniqueID = subfield_first_layer.GetUniqueID()
    print (f"subfield_first_layer_name: {subfield_first_layer.GetName()},  UniqueID: {subfield_first_layer_UniqueID}" )


    parameter_id = 440000260  #layer opacity
    op.SetKeyframeSelection([c4d.FIELDS , subfield_first_layer_UniqueID , parameter_id],True)   #<---- I don't know how to write it for subfield
    #op.SetKeyframeSelection([c4d.FIELDLAYER_PROXIMITY_FIELDS , subfield_first_layer_UniqueID , parameter_id],True)


if __name__ == '__main__':
    main()
    c4d.EventAdd()  

@ferdinand
Thanks so much for such a detailed response.
Learned a lot.
My problem is solved.
Thank you very much.

sorry @ferdinand

Like in the first half of the video, this can be done in the "bullet".
I would like to realize it in "simulation" as well.

So I want to know
bullet → doc.FindSceneHook(180000100)
simulation → ?????

I'm sorry for the trouble. I hope it's understandable.

doc[c4d.PBDSCENE_SUBSTEPS] = 45

Execute the script and the result feels like it changes the value here

@ferdinand said in How to change the value here using python:

doc[c4d.PBDSCENE_SUBSTEPS] = 45

@ferdinand
It's not work.
substeps is still 20

I don't know where to get this object() ( I mean this simulation scene object)

@m_adam
OK.
Thank you very much.

Cheers

@m_adam
Thank you very much.
For learning, this is a good example.

But this can only be implemented specific (it needs to be written in a script), I want a more free interaction, more "random" selection, depending on the current mouse selection (highlighted).

action "right click --> animation --> add keyframe selection" become a shortcut

But in the future try to open a topic for each question (in this case one for the KeyFrameSelection and another one for the Asset Browser).

Alright, received

Cheers