Help Vengeance

[Zeba17]

So i want to make vengeance give buff only if any people are nearby. Current XML:
<skill id="368" toLevel="1" name="Vengeance">
        <icon>icon.skill0368</icon>
        <abnormalLvl>3</abnormalLvl>
        <abnormalTime>30</abnormalTime>
        <abnormalType>PD_UP_SPECIAL</abnormalType>
        <affectLimit>10-10</affectLimit>
        <affectRange>200</affectRange>
        <effectPoint>-8784</effectPoint>
        <hitTime>1000</hitTime>
        <magicLvl>77</magicLvl>
        <mpConsume>35</mpConsume>
        <operateType>A3</operateType>
        <reuseDelay>900000</reuseDelay>
        <basicProperty>NONE</basicProperty>
        <magicCriticalRate>5</magicCriticalRate>
        <targetType>SELF</targetType>
        <affectScope>POINT_BLANK</affectScope>
        <affectObject>NOT_FRIEND</affectObject>
        <conditions>
            <condition name="EquipShield" />
        </conditions>
        <selfEffects>
            <effect name="MagicalDefence">
                <amount>4050</amount>
                <mode>DIFF</mode>
            </effect>
            <effect name="PhysicalDefence">
                <amount>5400</amount>
                <mode>DIFF</mode>
            </effect>
            <effect name="ResistDispelByCategory">
                <amount>-80</amount>
                <slot>BUFF</slot>
            </effect>
            <effect name="Speed">
                <amount>-40</amount>
                <mode>PER</mode>
            </effect>
        </selfEffects>
    </skill>

Tried to add:  <effect name="Vengeance" />, got effecthandler for it, but question is in which overrided function i should perform the checks if the people are nearby? l2jmobius.
 

[GLO]

This required core support. I would recommend @kalimeris for this, as he demonstrated very strong understanding of coding and l2j logic and has fixed this along with many other problems in mobius for me. Also very reasonably priced. You can fix this for like 5e.

[BruT]

cannot be done with xml only, you need specific modification in core side.