How do i insert a date from c#?

I have this insert:

insert into sap_paghe (nome_elaborazione, data_elaborazione, tipo, data_registrazione, data_scadenza, data_documento, osservazioni, data_allocazione_iva) values ('Nome elaborazione', '2021-12-22', 'H', '2021-01-31', '2021-01-31', '2021-01-31', 'RETRIBUZIONI GEN. 2021', '2021-01-31');

which perfectly works from SQLWorkbench but gives this error using C#

ERROR [HY000] [Informix][Informix ODBC Driver][Informix]Invalid year in date

I'm 100% sure the connection works because other inserts work fine, it's just the ones with the date. Any suggestion?

Here's the code:

OdbcCommand command = new OdbcCommand(insert..., DbConnection);
dataAdapter.InsertCommand = command;
dataAdapter.InsertCommand.ExecuteNonQuery();
command.Dispose();