Hello,

I have been trying to override OnSetNewNumber in configuration extension, but it seems that code inside new function never runs. What am I doing wrong? I disabled all compatibility modes to use pure 8.3.10.

&Before("OnSetNewNumber")
&AtServer
Procedure NUMC_OnSetNewNumber(StandardProcessing, Prefix)
// Some code;
EndProcedure

Hello,

In some scenarios, an extension can be attached incorrectly. Our developers are already fixing this issue.

You can try the following:
Right-click OnSetNewNumber in the configuration and click "Add to extension" for the application to reattach the extension.