Blocking Research

Is there a way to use simple mode and block research to a specific item i.e remove Landmines from tech tree? I have even tried turning on the advance mode and changed can research to false but item is still in tech tree. I am currently having to allow it to be reserched costing 125 scrap and then block crafting using No Craft mod.

turning can research to false will block the item from being researched in the tech tree. It wills till show in the UI though, it just wont be able to be unlocked.