【1.13.1】mob.properties | rename skin | not working

[zeibo]

I just upgraded my pack from 1.12.2, and I renamed the folder to optifine.

This is my original file. @ minecraft/optifine/mob/spider

skin.50=50 name.50=iregex:(\u00A74\u8718\u86db\u5973\u738b|.* sd50)

the name of image is "spider50"

But the spider named "&2蜘蛛女王" didn't change its skin to spider50

Did I miss something? Or you didn't update this, cus I can't find mob.properties in the new doc, too.

[sp614x]

Current documentation: https://github.com/sp614x/optifine/blob/master/OptiFineDoc/doc/random_entities.properties

[ewanhowell5195]

&2蜘蛛女王 is the name of the entity, but this is trying to match §4蜘蛛女王, which is why this doesnt work