id.new_folder shows a different ID than the one I get for Windows > New > Folder

custom.nss for get the id's:
modify(
mode='none'
type='back'
in='Neu'
find='Ordner'
tip=@(this.id + ' ' + id.new_folder)
)

this.id = 320029519
id.new_folder = 1087049962

Am I using the wrong ID Name or was an incorrect ID stored there?