@Override
	public boolean okMessage(final Environmental myHost, final CMMsg msg)
	{
		if((affected==null)||(!(affected instanceof MOB))||(invoker==null))
			return true;

		final MOB mob=(MOB)affected;
		if(msg.amISource(mob)
		&&(CMLib.dice().rollPercentage()>(mob.charStats().getStat(CharStats.STAT_DEXTERITY)-(getXLEVELLevel(mob)*3)))
		&&((msg.sourceMinor()==CMMsg.TYP_ADVANCE)||(msg.sourceMinor()==CMMsg.TYP_RETREAT)||(msg.sourceMinor()==CMMsg.TYP_FLEE)))
		{
			mob.location().show(mob,null,CMMsg.MSG_NOISYMOVEMENT,_("<S-NAME> stumble(s) in the footlocks."));
			return false;
		}
		return super.okMessage(myHost,msg);
	}