REST with CERTIFICATE

Hi. I'm having trouble linking digital certificate to REST requests. When I use the "OnValidateCertificate" event, delphi returns me the message: "[dcc32 Error] Unit1.pas (327): E2037 Declaration of 'RESTClient2ValidateCertificate' differs from previous declaration"

I'm using Delphi 10.2 and using the REST component

Can anyone help me with this?