Override Regex on mysql request (Bar Charts)

Hi :slight_smile:

I have a Mysql request I use on Bar Charts panel.
I want to color some bar with a special color, so I try to use regex filter to recolor bar with a specific name. But it does not work.
Here the graph:

In override property, I use for example /1511/ as regex pattern, but it does not work :confused:
I tried some other pattern to match with 1511 (find on internet), but nothing works :confused:

Do I miss something ?

thx :slight_smile:

I try to use values mapping instead, it works for the name of the value, but not the color :confused:

Value mapping:

Works for name, but not color (stay grey):