LiquidCrystal 3 decimals

How can I put 3 decimals with LiquidCrystal library?

actualy with a long variable i see 2 decimals, i need see 3

Thank´s

Maybe just me, but I have no idea what you're talking about. Can you clarify your problem?

Read this.

A second parameter specifies the number of decimal places, for example:

lcd.print(1.23456, 3);

Prints: 1.235 as it is rounded up.

Thank you, your answer helped me a lot .