Template Conditionals | If Under X Posts Show Div

[DrBaja]

Hey,

I'd like to make a template code say If User has less than 10 posts then set .underPostNotification visible to inline else then set to none.

Basically, I'd like to show users a message if they have under 10 posts (to warn them about spamming is not tolerated and remind them of posting rules)

I haven't seen any in-depth tutorials on how to use Template Conditionals.
I have knowledge of CSS, JS, HTML, and PHP. I'm also familiar with how the MyBB template system works.

If someone could point me to an in-depth tutorial or give me some tips on how to do this that would be awesome!

Here is a quick code I whipped up from some posts I've seen.

PHP Code:

<if $mybb->user['postnum'] >= 9 then> // Not sure what to put here but it should set the Visble to Inline (Visible) <else> // Not sure what to put here but it should set the Visble to None (Disapear) </if>

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Thanks,
DrBaja