How can use Channel Pipette-Aliquot with 50ulTipwithFilter?

Hello everyone,
I would like to add an aliquot of the mixture to the PCR plate and use 50ulTipwithFilter. When I select 50ulTipwithFilter I do not get an option to select the liquid class, how can I fix this?

It looks like you do not have a liquid class that matches what you’re selecting (50uL with filter, jet dispense). You can create these yourself or modify an existing one (maybe start with the 50uL with filter surface dispense) using the liquid class editor (in HAMILTON/Bin)