Lookup Wizard

How i can do this please:
I have a where statment in the lookup wizard which is like this:

"Prefix <> (select aeronave from reserva_voo where data = '2018-08-16' and reserva = '10:00 - 12:00')"

This works, just i need to take the data value and reserva value from the fields from the current add page
i tryed this but doen´st work

"prefix <> (select aeronave from reserva_voo where data = ':master.data' and reserva = 'master.reserva')"
Thank you for help