# Help monitoring output levels **URL:** \ **Category:** FMOD Engine\ **Created:** [February 7, 2020, 3:42pm UTC](https://qa.fmod.com/t/help-monitoring-output-levels/15447 "2020-02-07T15:42:21Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![MarsAstro](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@MarsAstro](https://qa.fmod.com/u/MarsAstro)\ **Post date:** [February 19, 2020, 3:07pm UTC](https://qa.fmod.com/t/help-monitoring-output-levels/15447/5 "2020-02-19T15:07:32Z")
I’ve looked more into it and came upon a potential issue. Detailed it in a new question here: > [@Do I need to call update every frame?](https://qa.fmod.com/t/do-i-need-to-call-update-every-frame/15472): > > Hello! I’m trying to do some metering for volume levels on an event instance. I have some code that feels to me like it should work, but it only ever outputs 0.0 for all rmslevel channels. I found this old topic: I tried to find a way to call FMOD::System::update every frame (as the post implies to be the issue), seemingly I needed to do something called low level API initialization. However, all the examples I found used code that did not exist/compile with my FMOD plugin version. So, I’m w… --- _[View the full topic](https://qa.fmod.com/t/help-monitoring-output-levels/15447)._