Check if cursor position is on index of a word

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1

Hello roblox forum,
I want to achieve a function that checks if cursor position of a textbox is on word index
like that

local function check(textbox, index)
    return textbox.SelectedWord == index
end
--or like this (| means cursor)
--i want to check if cursor is located on first word or not
"WordO|ne WordTwo"

I am familliar with this

local selectedText = string.sub(
	textBox.Text,
	math.min(textBox.CursorPosition, textBox.SelectionStart),
	math.max(textBox.CursorPosition, textBox.SelectionStart)
)

but there is no “selectedWord” method