Plugin for editing array on product page

[SiEMdj]

Hello,
i need a plugin for edit original product array.

How i can do for it? I've already made a simply base with a joomla plugin.

Code Select Expand

class plgSystemVm2feedaty extends JPlugin {
function onContentBeforeDisplay($context, $row, $params, $page = 0){
   
}
}

How can i access to VirtueMartControllerProductdetails class?