Sysntaxis Error on Expression Date_diff and Time_diff

I tray differnt formats a on this expession without sucess

Hi!

You need to call date_diff like this:

date_diff([M1 Inicio], [M1 Final], ...)

The attribute names can't be quoted with the single quotes you're using, only with [].

You can click attribute names in the list on the right side, they will be inserted correctly by Generate Attributes.

Regards,
Balázs

thanks