Hi!
So I was trying to make school + work performance decrease when meeting new or talking to coworkers/classmates, so I added the following to the HangWithCoworkersTone and MeetCoworkersTone XMLs:

<kPerformanceModifier value="-2">
<!--Performance modifier while chatting.-->
</kPerformanceModifier>

I straight up copied it from the SleepAtWorkTone XML, except for the value and the note. I also tried the one from the TakeItEasyTone (<kPerformanceModifier value="-2" />, so actually the same.)
Now, my problem is that in-game it doesn't decrease my sims' performance and I also cannot change the value in NRaas Retuner (kPerformanceModifier doesn't show up) unlike how I can for SleepAtWorkTone and TakeItEasyTone. This happens on my existing game and on a new save, with children, teens, and adults. I've never had this problem before when making changes to an XML.

Delphy's Dashboard doesn't show any conflicts with the file and I also tried putting it in the Overrides folder. I even tried disabling NRaas Retuner but the outcome is still the same: No performance impact. I've deleted the cache files before restarting the game. Waiting an in-game day doesn't change anything either.

Can I not change the XML to decrease performance when chatting with coworkers? Is there another way to do this? Am I overlooking something stupidly obvious? Please, I just want my sims to face consequences when talking at work or school all day Any help would be greatly appreciated, thank you!

In short, tunable values correspond to lines of code within interactions.
You can only modify the tuning that is provided, copying lines valid in another XML will mean nothing when pasted in another.

The HangWithCoworkersTone doesn't know what kPerformanceModifier is, as the code never interacts with this tuning.

A script mod would have to replace these tones and add a performance modifier.

You can add some consequences for school by tuning SchoolHigh and SchoolElementary - which have tuning values for each tone to contribute to detention chance - but there doesn't seem to be a career equivalent.

Thank you for the info! Guess I'll have to learn scripting after all.

I already changed the values for detention but my teen sim still has an A and is on Honor Roll frequently, since detention doesn't decrease his school performance, and sadly that won't affect work performance either.