Setting Ability Scores Magically to be Lower

I have been encountering a problem when making magic items that set a creature's ability scores to be lower than what they normally are. The magic item creator allows someone to set an ability score to be higher than a creature's original ability score. I am trying to set a creature's ability scores to be lower than they originally were and have that translate to the character sheets on D&D Beyond. I have only been able to get ability scores to be set to higher ability scores. Do you have any ideas as to make this work?

It is not currently possible since the the system is designed to use whichever is the higher value since that’s how all the official stuff works. You will have to just list it as plain text and the player will have to adjust their Ability Score manually directly on their character sheet.

I hope that helps.

If the official stuff works in this way, how is the official spell Feeblemind meant to be implemented? It clearly says, that scores are set to 1, but the dndbeyond system can't handle this. Even if you manually override the score, you can't set it to 1.

I was curious so I just tested this and, oddly enough, you cannot manually override the score to 1. If you enter 1 as the Override Score it automatically adjusts to 3.

How has this not been implemented yet!!!

Is this something that they are working on?  I am trying to manually create a werecreature where all their states would change when they change, but it only gives the improved scores not the ones that takes points away.  

Make a wonderous item or feat (item is better for toggling, feat is better for werecreatures since you can add actions with feats)

Modifier Type: Bonus
Modifier Sub-Type: [Ability] Score
Fixed Value: -30

Modifier Type: Bonus
Modifier Sub-Type: [Ability] Score
Fixed Value: [whatever the new score should be]

Do this for all scores being adjusted.

This basically reduces the score to 0 then adds whatever you need the score to be.