If I used windower, mine might possibly look like this:
<!-- Sorcerer's Ring Rule (Support Job Variables Pre-Set) -->
<if advanced='$Ring == 1'>
<!-- Sorcerer's Ring HP Latent Check and Activation -->
<if Advanced='"$%SubJobRingHP" !="\$%SubJobRingHP"'>
<if Advanced='%HP > $%SubJobRingHP'>
<action type="equip" set="MinusHP" />
</if>
</if>
<!-- Resistance of Mob Allowing, Active and Equip Sorcerer's Ring on all Nukes -->
<else>
<action type="equip" set="MinusHP" />
</else>
<action type="equip" when="midcast">
<lring>Sorcerer's Ring</lring>
</action>
</if>