Custom jsp tag in WEB-INF Follow

Hello,

Is it possible to properly add custom tag file like "something.tag" from a plugin? I created WEB-INF/tags/myfolder and imported something.tag using taglib, however I keep getting exception

<%@ taglib prefix="myfolder" tagdir="/WEB-INF/tags/myfolder" %>

No tag [something] defined in tag library imported with prefix [myfolder]

I would like to use it within editParameters of my custom runner plugin.