Possible to fail BLE service characteristic write?

I have a Bluetooth characteristic onWrite function as so:

onWrite: function(evt) {
  let value = new DataView(evt.data).getUint32(0, /*littleEndian=*/ true);
  // Do something with value.
 },

I'd like to validate the value -something like this:

onWrite: function(evt) {
  let value = new DataView(evt.data).getUint32(0, /*littleEndian=*/ true);
  if (value < 0)
    throw 500; // Raise some kind of exception
  // value is good, do something with value.
 },

Is this supported?