ParametersMessageBehaviour triggers onParamChange as long as the setter or the setting of parameters is successful (i.e. doesn't throw or return a null) , which means it would be triggered even if the old value and the new value were the same and there wasn't a change of the parameter value.
From the perspective of another Agent, it's more useful to specifically know if a parameter value did change rather than just the fact that a parameter change was attempted. This would reduce a lot of noise created when setting the same value again and again.
ParametersMessageBehaviourtriggersonParamChangeas long as the setter or the setting of parameters is successful (i.e. doesn'tthrowor return anull) , which means it would be triggered even if the old value and the new value were the same and there wasn't a change of the parameter value.From the perspective of another Agent, it's more useful to specifically know if a parameter value did change rather than just the fact that a parameter change was attempted. This would reduce a lot of noise created when setting the same value again and again.