Help with usage of Yanfly's Absorption Barrier to create armor shred

[The Strange Man]

Hello! I'm trying to build an armor system with Yanfly's "absorption barrier" script. One thing I really want to incorporate is 'armor shred' and 'flesh rend' kinds of attacks. What I mean is that the system is set up so the damage is always split 50/50, and I want certain attacks to get bonuses in damage to either the barrier or target. So if an armor shredding attack would deal 50 damage to a target who still has his barrier, the damage would be split 50/50, but the damage hitting the barrier would be increased due to the armor shred, causing the attack to do 25 to the actor and 75 to the barrier. I am hoping that I can get help with how I would set this up. The main thing is I don't want the attack to simply have a higher damage or different percentage of how the damage is split, I want the attack to deal an even 50/50 damage split, but that the damage dealt to the barrier is "super-effective". Can anyone help?