How to set up correlation between traces and logs using my custom attribute

I collect traces and logs from my applications and services. I introdused my custom correlationId. I created a label in loki for my correlationId and I have it as a span attribute.

How to set up the correlation? This is my set up in Adminitration → Plugins and data → Correlations

I expect to see a link in my span where I draw the ugly rectangle

Is this actually possible? How to achieve that?