Display UI action button based on role

[chanikya]

Here we have "Republish " button, it should be visible only   ---who are having " kb_retire" role     OR     who are the author in KB article.                                                                                                                                                             My condition is not working.....

if you see below image i am not a Author of this article and i don't have kb_retire   role, but it is visible me

it should be visible only=-------who are having " kb_retire" role         OR             who are the author in KB article.  

[Midhun1]

I tried with this this is working fine !(gs.hasRole('admin'))

((gs.hasRole('kb_retire') && !(gs.hasRole('admin'))) || (current.author==gs.getUserID())

[Ashutosh Munot1]

Exactly what i posted. This worked for me too.

Thanks

[chanikya]

i am tried it,   but not working it.