In our LCA we have an interactive script using DateTimePicker. Here we want to have specific DateTime format by setting DateTimePicker.CustomTimeFormat = "dd.MM.yyyy HH:mm". But this doesn't change anything. DateTime is always displayed in this format

Hi Harald,
This setting is specific to Cube. In DB/LCA, the datetime format used in the timepicker component is fixed to dd / mm / year hh:mm".
If you would like to see this configurable or supported in the web environment, I recommend submitting a Feature suggestion.
Kind regards,
Robin