Cannot set UDDatePicker and UDTimePicker using Set-UDElement

I am unable to set the values of the UDDatePicker and UDTimePicker using Set-UDElement. For example:

Set-UDElement -id ‘pkr_date’ -Properties @{‘Value’ = [datetime] ‘00:00:00’}
Set-UDElement -id ‘pkr_time’ -Properties @{‘Value’ = [datetime] ‘00:00:00’}

would have no effect. Is there some other way to do this?

Product: PowerShell Universal
Version: 3.8.12