has_tag not working!

hi,

i want to add “tag” filter to my category widget. but it is not working. when i add is_tag('specialtag') or has_tag('specialtag') its getting nothing on page.

my widget seems like that ; http://i62.tinypic.com/wugvlw.png

https://ww.wp.xz.cn/plugins/widget-logic/