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several change detection possible??

Hello,
 
I have an application MFC/C++ that read and write on I/O of a card digital DAQ 6527 PCI.
Is it possible to configure several change detection event on the input of this card?
 
I mean, I want to write several task with: DAQmxCfgChangeDetectionTiming and DAQmxRegisterSignalEvent on different line of the card, but when I want to start the second task, i have the following message:
DAQmx Error: The specified resource is reserved. The operation could not be completed as specified.
Task Name: _unnamedTask<1>
Status Code: -50103
Does it mean that it's not possible to have several change detection on a same device???
 
Second question: Does a simulated card (owing to MAX) can generate DAQmx_Val_ChangeDetectionEvent signal as a hardware card??
Thanks for any help,
Best regards,
 
                     Philippe
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Hello,

See the following link for an explaination of the error you have:

http://digital.ni.com/public.nsf/websearch/04BEDD9E9E91ED3486256D180048116D?OpenDocument

Regards

ClémentG
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