Generate expected format depending on custom scalars (Date)

Hello! It seems the generated format for fields depending on custom scalars does not correspond. Not sure it's something we could add/fix? I know we could override it in the resolvers files, but is it possible to have the expected format directly in the generated json mock file?

Schema:

Custom scalar (Date) defined in my code:
-> The returned value is an Integer

Moquerie dashboard:
-> We set any custom value in timestamp format

Generated mock file
-> Should be an Integer instead of String?