Conditional to display widget in specific node(s)

I would like to display a widget on forum view in the sidebar of specific forum nodes only.

I have tried this, but it doesn't work:

Code:

 in_array({$forum.node_id}, {xen:array '8', '485'})

To display in one specific node:

Code:

{$forum.node_id} == '658'

Could you please let me know what should I put on the Conditional box?
I am using WF2.6.3 on XF 1.5.16a

 

Thanks! This works for XFRM, but not for Article Management System nor User Blog System.

 

Yes, that correct. AMS, UBS are the same framework as Showcase. All the addons are by Bob.