Conditional help!

[Doomday]

Well i need to know how can i make a conditional, that when a thread is closed dont show something or show something

for example if i want to show something only to guess members i put

<if condition="$show[guest]">

i hope someone can understand what i want xD

Thanks

[Dismounted]

<if condition="$thread['closed']">

[Doomday]

Thank you very much dismounted