Be right back on PC in 30 minutes... | Foundry VTT | Page 1

More something like this :
So in prepareBaseData


this.system.attributes.spd.base = this.system.attributes.spd.level;

in prepareDerivedData


this.system.attributes.spd.mod = this.system.attributes.spd.ae + this.system.attributes.spd.man;
    this.system.attributes.spd.score = this.system.attributes.base  + this.system.attributes.spd.mod;

in my Active Effect (pseudocode)

{
  key: system.attributes.spd.ae 
  mode: override
  value: 0
}

And instead of override, I would use Add for the AE

#Be right back on PC in 30 minutes...