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AF custom data reference fails in PI Processbook when a trend object exists

Question asked by s_hoskins_ on Dec 15, 2015
Latest reply on Dec 16, 2015 by stang

I have a custom data reference which works correctly in PI System explorer and PI processbook (display).  Both the GetValue and GetValues functions have been implemented.


When I have one or many tags on the PI processbook (display) all the CDR attributes return the correct value.  However, if I place a trend object into the display then all the CDR attributes return "Specified cast is not valid.".  I have not even assigned any tags to the trend object yet.


What is the CDR code doing wrong that a trend object on the display causes it to fail?