Reset a time picker

HI

Anyone know how to reset the time picker value back to original placeholder text? using on click of a button.

Tried all options I know of yet no joy

Says its looking for a time in HH:MM but i just want to send it back to blank and show the place holder text

 export function clearM11button_click(event) {
  $w("#meal1Timepicker").value = null;       
  console.log("Meal 11 Cleared!");
 } 

// Tried these
$w("#meal1Timepicker").value !== "";
$w("#meal1Timepicker").value = null;

Dan, setting it to an empty string will reset it:

$w("#meal1Timepicker").value = "";

Man ! I could have sworn I tried that!!!

Thanks mate