Duration of vibrations in milliseconds. This parameter can correspond to:

• an integer corresponding to the number of seconds,
• a Duration variable,
• Versions 23 and later
  the direct indication of duration (1 s or 10 ms for example).
  New in version 23
  the direct indication of duration (1 s or 10 ms for example).
  the direct indication of duration (1 s or 10 ms for example).

Array of integer describing the alternation of periods for triggering and stopping the phone vibrations:

• The first value corresponds to the duration before triggering the vibrations.
• The second value corresponds to the duration of vibrations.
• The third value corresponds to the duration before the next triggering of vibrations.

And so on.

• True if the alternation of periods muse be repeated indefinitely,
• False (default value) to perform no repetition.