At the moment, if a SparkplugSimple.Value is written with a new value, a notify bit is set. If it is written again without changing the value, the notify bit is cleared.
This should be changed to:
if a SparkplugSimple.Value is written with a new value, a notify bit is set. If the notification is acknowledged, the notify bit is cleared.
The code which uses the notification should then call the AcknowledgeNotify() method.
Fixed in v0.9.9.0