Zeos: Error of type differences in different databases

I have a system made in Delphi 7 that can be connected in both MySql and Firebird .. I have a configuration file where I inform the host, bank, user, password, port and Zeos protocol that indicates the type of bank . It is opening MySql database without problems, but when I put the settings to access Firebird in localhost, it concta but when opening the tables is giving error of different types of fields. In case the first field that already gives an error is a Float field but Zeos is interpreting as Integer. Can anyone give me an idea of what might be happening? obg!