Por que você não cria apenas dois gatilhos separados?
CREATE TRIGGER [myUpdateTrigger] ON [myTable]
FOR UPDATE
AS
BEGIN
END
CREATE TRIGGER [myDeleteTrigger] ON [myTable]
FOR DELETE
AS
BEGIN
END
CREATE TRIGGER [myUpdateTrigger] ON [myTable]
FOR UPDATE
AS
BEGIN
END
CREATE TRIGGER [myDeleteTrigger] ON [myTable]
FOR DELETE
AS
BEGIN
END