Keyboard and parameter.text questions

Questions
1

I plan to detect if return is pressed and then automatically close the keyboard. However, it seems hideKeyboard does not even work here! Why is this?

I also wanted to know how to detect multiple lines. But, how can I do any of this if I don’t know where the keyboard that is active is?

function hide(uselessstring)
    --print("Testing Input:"..uselessstring)
    print(isKeyboardShowing()) --only returns false!
    hideKeyboard() --doesn't work on parameter.text's keyboard
end
function setup()
    parameter.text("mp3name","mp3name",hide)
end
2

@xThomas Try something like this. You have to call showKeyboard() before hideKeyboard() for it to work. Why, I don’t know. If you want to use whatever was keyed in the parameter.text field, move it to another variable and use that variable. You need to clear “name” in this example or you’ll end up in a bad loop that’s hard to get out of.

function setup()
    parameter.text("name")
    showKeyboard()
end

function draw()
    background(40, 40, 50)
    if string.sub(name,#name,#name)==RETURN then
        str=name
        name=""
        showKeyboard()
        hideKeyboard()  
    end
end