Name of left ctrl?

Questions & Answers
1

So when I use Input.GetButtonDown(“left ctrl”); is says that name doesnt exist.

2

For what you want to accomplish I recommend using Input.GetKeyDown(KeyCode.LeftControl) instead.

If you still want to use that method, go to Edit->Project Settings->Input and use and configure the names listed in there.

Here’s a reference: Unity - Scripting API: Input.GetButtonDown