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Hello forum! I have a site, where I want to remember two settings defined by user: 1) Theme (light or dark) 2) Language (Finnish or English) Because user makes changes to these settings on client side, I am a bit lost with how can I save them in ProcessWire $session variable? I would like to use $session for more reliable saving, and since it is only two variables I will use, I doubt it will become too resource-needy. I have tried using jQuery's post() -method referring to a file in Templates folder (theme.php), but I get 403 Forbidden Error. I don't like the idea of trying to post to same file user currently is in, which is why I thought having a separate file would be good in this. Contents of theme.php: <?php namespace ProcessWire; header('Access-Control-Allow-Origin: https://domain.com'); $theme = $input->post['theme']; if(!empty($theme)) $session->theme = $theme; ?> Long story short: Does anybody have any pro tips I could use with setting and getting $session variables?