Feature: Folder ID for field type asset link

[Esylias]

I want to pre select the folder for the field type "asset link". I've created an model and added an "asset link" field.
Now i tried to set the pre selected folder by getting the id from "/assets/folders" in

field options
nothing happened
{ folder: 'c79bb8b8653066498b0002cd' }

no assets found
{ filter: { folder: 'c79bb8b8653066498b0002cd' } }

field meta
nothing happened
{ folder: 'c79bb8b8653066498b0002cd' }

I've tested it in 2.39 and 2.4.0, but nothing worked. folder is always null in network tab.