How to increase the size of a textbox if there are too many lines? [Solved]

Title, I have this scrolling frame with a textbox in it that I want to increase in size if the lines are out of the viewing area of the textbox. How can I do this?

Edit: Solved! Script-

if textBox.TextFits == false then
    repeat
        wait()
        textBox.Size = textBox.Size + UDim2.new(0, 0, 0, textBox.TextSize)
    until textBox.TextFits == false
end