GapiSheetsV4Model.ConditionValueSourcetype t = {relativeDate : string;A relative date (based on the current date). Valid only if the type is DATE_BEFORE, DATE_AFTER, DATE_ON_OR_BEFORE or DATE_ON_OR_AFTER. Relative dates are not supported in data validation. They are supported only in conditional formatting and conditional filters.
*)userEnteredValue : string;A value the condition is based on. The value is parsed as if the user typed into a cell. Formulas are supported (and must begin with an `=` or a '+').
*)}