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There may be attributes needed to be updated (to the cloud) every time they are accessed.

An example for this may be a command attribute where it is of interest to know when the command was requested, no matter if the attribute value is going to change or not. For this purpose the attribute could be decorated like this:

@cloudio_attribute(update_only_changes=False)
def command(self): return self._command

@command.setter
def command(self, value): self._command = value

Default value for update_only_changes parameter is True.

When an attribute is changed from the cloud, the mapping find the first topic containing the attribute name. For example : the topics hello.testhere and hello.test. If the mapping order is like that, when the hello.test topic is modified by the cloud, it's the hello.testhere which is modified !