[Health-dev] Error when creating new line in Services

[Mario Puntin]

Hi all!
I was testing Health 3.0 RC2 in the online demo, and created a new Service to invoice.
When I inserted a new line in the service and added a product, say Urine analysis, i got this message:

Traceback (most recent call last):
  File "/trytond/protocols/jsonrpc.py", line 162, in _marshaled_dispatch
    response['result'] = dispatch_method(method, params)
  File "/trytond/protocols/jsonrpc.py", line 191, in _dispatch
    res = dispatch(*args)
  File "/trytond/protocols/dispatcher.py", line 167, in dispatch
    result = rpc.result(meth(inst, *c_args, **c_kwargs))
  File "/trytond/model/modelview.py", line 649, in on_change
    method()
  File "/trytond/model/modelview.py", line 85, in wrapper
    assert result is None, func
AssertionError: <unbound method gnuhealth.health_service.line.on_change_product>

Quite strange
Regards!
Mario