It depends on the type. Does the following clarify things?
SECTION 2 JAR–FCL 2 (Helicopter)
10.3 Helicopters (without flight simulator)
Whenever a helicopter is used for training the amount of flight time practical training should be adequate for the completion of the skill test. This should be at least 5 hours for single-pilot single-engine and 8 hours for single-pilot multi-engine and 10 hours for multi-pilot helicopters.
10.4 The amount of flight training will depend on the complexity of the helicopter type involved and, to some extent, on the previous experience of the applicant. Holders of IR(H) wishing to extend the IR(H) to a further type should have additionally 5 hours flight training on type according to IFR.]