Thread:Extension talk:Header Tabs/switchtablink parser function doesn't seem to be working in mediawiki 1.18.1/reply (8)

Cavila: If the tab is on the same page, it appears that you do not need to pass the third parameter in the switchtablink function.

So for example, you should only need:

Is that what you're doing? I did find that if you pass the third parameter and try to link to the same page, it does not switch tabs. Omitting it and performing a hard refresh of the page appeared to do the trick.