register signal event not supported?

[holzi-x]

Hi all,
I have troubles registering a change detection event. The following code

import nidaqmx.system

def getDaqDcPowerVoltage(task_handle=0, every_n_samples_event_type=0, number_of_samples=0, callback_data=0):
   result = None
   print('this is the digital change detection callback function.')
   print(callback_data)                                            
   return 0                                                        
   
DaqMxSystem = nidaqmx.system.System.local()                         
task = nidaqmx.Task()                                               
task.di_channels.add_di_chan('PXI1Slot2/port0/line0')               
task.timing.cfg_samp_clk_timing(1000)                               
task.Buffer = 10                                                    
task.output_buf_size = 10                                           
task.read_all_avail_samp = True                                     
task.register_signal_event(nidaqmx.constants.Signal.CHANGE_DETECTION_EVENT, getDaqDcPowerVoltage(callback_data = 0))
task.start()

ends in this error:

 cfunc = lib_importer.daqlib.DAQmxRegisterSignalEvent
 AttributeError: 'DaqLibImporter' object has no attribute 'daqlib'

I saw, that the DaqLibImporter class in _lib.py is truely missing the daqlib property. Is this something that is not supported in the current nidaqmx-python implementation or am I doing something wrong?

BR Andreas