Stop Simulink Model Update via Callback

I have a callback on a custom block that checks a bus selector for missing signals, at the start of the model update routine. Based on the results of that update, I send an sldiagviewer.reportError(errMsg) command to Matlab. What I want it to do is stop the update cycle at that point because I know it will throw an error downstream in ~5 minutes where the user will have to fix the problem. Instead, Simulink just continues runnign the update cycle until Simulink decides it cannot continue anymore.

So my question is basically how to stop the update cycle?

Answer 1

[Fangjun Jiang]

Instead of sldiagviewer.reportError(errMsg), if you do error(errMsg), it should stop.

[RIchard]

I was hoping to avoid that as it sends it to the command window

[Fangjun Jiang]

okay, try modelName([],[],[],'term'). I think model update is equivalant as modelName([],[],[],'compile')

https://www.mathworks.com/help/simulink/ug/simulink-model-command.html

[RIchard]

Your orignal comment is correct and I have accepted it. Somehow, I was incorrectly calling `error`, and it was going to the matlab version instead of simulink.