Solved
Uncaught (in promise) ReferenceError: s is not defined
The error came from here. s is not defined
What is that first image of?
s.eVar5 = window.Yo ? Yo.rum.get().optState : 'yo-not-present';
Is this the code inside your Data Element "Yottaa_Performance_Monitoring (v5)"??
If so, the s object is not available inside of Data Elements, but this also is not how Data Elements work...
If you are setting an eVar to a Data Element:
Then you shouldn't be trying to set the dimension inside that code...
Data Elements set a value (using standard JS)
var MyVar = "something";
//or
var MyDataElement = _satellite.getVar('anotherElement');
// Do some manipulation, logic, etc here that results in "finalValue":
var finalValue = "X";
return finalValue;
That return passes whatever value your code creates (or "empty string" if the final result is null).
Then you set the Data Element into your dimensions in your tracking rules to take the value of the Data Element and set it where you want it....