Turorial 4 Scroll Wheel: problem with textbuffer & TEXT_SIZE (V4.20.0) Hi everyoneI am new to toughgfx and need a scroll wheel for our new project. So I started with the tutorial 4. I think I followed every step, but when I copy the code, I get an error. The problem seems to be the textBuffer and TEXT_SIZE (Unicode::itoa(no, textBuffer, TEXT_SIZE, 10);). I get the message that they are not defined.As far as I know the tutorial should have all the steps and all the code needed.Any Idea what I'm missing?Thank you!#ifndef MENUELEMENT_HPP
#define MENUELEMENT_HPP
#include <gui_generated/containers/MenuElementBase.hpp>
#include <BitmapDatabase.hpp>
class MenuElement : public MenuElementBase
{
public:
MenuElement();
virtual ~MenuElement() {}
virtual void initialize();
void setNumber(int no)
{
Unicode::itoa(no, textBuffer, TEXT_SIZE, 10);
switch (no % 7)
{
case 0:
icon.setBitmap(Bitmap(BITMAP_ICON00_ID));
break;
case 1:
icon.setBitmap(Bitmap(BITMAP_ICON01_ID));
break;
case 2:
icon.setBitmap(Bitmap(BIT
