OnBeforeCurrencyRateUpdate

bool event_handler(
   int ID,
   array arFields
);

OnBeforeCurrencyRateUpdate event is called prior to updating an existing currency rate. Allows to modify the entered data.

Parameter	Description
ID	Currency rate ID.
arFields	Associative array of currency rate parameters. List of available array keys can be found in the CCurrencyRates::Update method.

Can be returned false, if the updating must be prevented. Otherwise, true value must be returned.