.Net: How to output error messages to [OBSERVATION] in native functions

[hyam1567]

My native function raises an exception with a message when an error occurs.
throw new Exception( "Argument must not be a negative number" );

However, this error message is not output to [OBSERVATION].
In the log, the exception message always looks like this.
2023-xx-xx xx:xx:xx.xxxx|INFO|Microsoft.SemanticKernel.Planners.StepwisePlanner|Observation: Error invoking action MyPlugin.Sqrt : Exception has been thrown by the target of an invocation.

I need a way to output error messages to [OBSERVATION].

[matthewbolanos]

@gitri-ms, do you know if our new planner is able to handle exceptions like this?

[gitri-ms]

@matthewbolanos The FunctionCallingStepwisePlanner should be able to catch exceptions and retry. I'm not sure if it works for all unexpected exceptions though, but it works for a few common ones, such as the model returning invalid function info.