JOSM new Icon for existing style

Hello,

i use the traffic_sign style from yopaseopor, but i miss a specific german sign.
I add the pgn file from the sign to the zip of the style.
How i edit the zip or JOSM, that the icon is seen on the map.
The style has this sign already because I can use it, but i see now icon like the others.

You may create a pull request or issue at https://github.com/yopaseopor/traffic_signs_preset_JOSM that your change becomes available for all users.