How to create a unit that is strong in defense

[AL_2020]

I am trying to create a weaponry & armor mod.

How can I make all players unit be strong in defense?

<Row>
<ModifierId>LEATHER_ARMOR_UNIT_DEFENSE</ModifierId>
<ModifierType>MODIFIER_PLAYER_UNITS_ADJUST_STRENGTH_WHEN_DEFENDING</ModifierType>
<OwnerRequirementSetId>LEATHER_ARMOR_DEFENSE_CATTLE_SHEEP_DEER_REQUIREMENTS</OwnerRequirementSetId>
<SubjectRequirementSetId>LEATHER_ARMOR_ERA_1_2_UNIT_REQUIREMENTS</SubjectRequirementSetId>
</Row>

Will the above work?