Date&Time to Long

Hi everyone.

With the “UNIX Timestamp to Date&Time” Node I can easily convert my Long Number to a date.

Now I am looking for a way, to convert a date&time to a long number.

Is there any way to it? Because I’ve tried it with the “Column Expression” node, but I receive an error that “The provided value of type ‘LocalDateTime’ cannot be converted to Long”.

I also tried to change the date to a string then from string back to date, I tried to Modify the date and so on.

Nothing works though.

Kind regards