'Press-and-hold' console buttons do not work in Custom direct selects.
On the Virtual Keyboard, they work by long pressing the button until its outline turns green. After that, it stays in a button-down state until you press another button. Examples are Shift or Release on the virtual keyboard. It does not work like this for the buttons you insert to custom direct selects. This is a problem for missing 'press-and-hold' buttons from the virtual keyboard, such as the Parameter View button.