On page load I want to initialize the autocoplete with one specific option. I am using MaterializeCSS The documentation says

Select a specific autocomplete options.
Arguments
Element: Element of the autocomplete option.
instance.selectOption(el);

I tried

//autocomplete.selectOption("Radek")
//autocomplete.selectOption({"Radek"})
autocomplete.selectOption({"Radek":null})

but nothing worked. Could you suggest how to select autocomplete option programaticaly?

 var elemOptions = {
         data: {
            "Radek Surname ": null,
            "Radek": null,
            "Radoslav": null
        },
      minLength : 2,
    }
var elemAutomplete = document.getElementById('autocomplete-input1')
var autocomplete = M.Autocomplete.init(elemAutomplete, elemOptions);

//autocomplete.selectOption("Radek")
//autocomplete.selectOption({"Radek"})
autocomplete.selectOption({"Radek":null})

and working jsFiddle