Why not call buttonCallbackHandler in touchGFX?

Hello! In project i am get in interrupt touch coordinate and handled in STM32TouchController::sampleTouch:

bool STM32TouchController::sampleTouch(int32_t& x, int32_t& y)
{
 /**
 * By default sampleTouch returns false,
 * return true if a touch has been detected, otherwise false.
 *
 * Coordinates are passed to the caller by reference by x and y.
 *
 * This function is called by the TouchGFX framework.
 * By default sampleTouch is called every tick, this can be adjusted by HAL::setTouchSampleRate(int8_t);
 *
 */
 if (ft_initialized)
 {
 if (ft5206.touchDetected)
 {
 x = ft5206.touchCoordinatesX[0];
 y = ft5206.touchCoordinatesY[0];
 ft5206.touchDetected = 0;
 return true;
 }
 }
 return false;
}

But function Screen1ViewBase::buttonCallbackHandler never call:

void TestViewBase::buttonCallbackHandler(const touchgfx::AbstractButton& src)
{
 if (&src == &button1)
 {
 //Interaction1
 //When button1 clicked change color of box1
 //Set RGB color R:255, G:0, B:0 on box1
 box1.setColor(touchgfx::Color::getColorFrom24BitRGB(255,0,0));
 box1.invalidate();
 }
}

TestViewBase::TestViewBase() :
 buttonCallback(this, &TestViewBase::buttonCallbackHandler)
{
 
 box1.setPosition(0, 0, 800, 480);
 box1.setColor(touchgfx::Color::getColorFrom24BitRGB(63, 59, 107));
 
 button1.setXY(315, 210);
 button1.setBitmaps(touchgfx::Bitmap(BITMAP_BLUE_BUTTONS_ROUND_EDGE_SMALL_ID), touchgfx::Bitmap(BITMAP_BLUE_BUTTONS_ROUND_EDGE_SMALL_PRESSED_ID));
 button1.setAction(buttonCallback);
 
 add(box1);
 add(button1);
}