Key binding not working as expected

[Hudrolax]

I have a key bind in my Vim like this: inoremap .<space><space> <Esc>la. and it's working fine. It's a good solution for typing code like this func(arg).anything without using arrows or changing the mode. But use my .vimrc or use config below not working as expected:

"vim.insertModeKeyBindings": [
        {
            "before": [".", "<space>", "<space>"],
            "after": ["<Esc>", "l", "a", "."]
        }
    ],