Simple action to call iPhoneUtils.Vibrate:
// (c) Copyright HutongGames, LLC 2010-2011. All rights reserved.
using UnityEngine;
namespace HutongGames.PlayMaker.Actions
{
[ActionCategory(ActionCategory.Device)]
[Tooltip("Causes the device to vibrate for half a second.")]
public class DeviceVibrate : FsmStateAction
{
public override void Reset()
{
}
public override void OnEnter()
{
iPhoneUtils.Vibrate();
}
}
}
As you can see it's super easy to wrap a simple Unity command - just make an action and call the command in OnEnter().
EDIT: Changed action name to DeviceVibrate.