[Fix] Improve HP Damage Multiplier Active Effect (#2110)

module/dice/dhRoll.mjs

@@ -248,6 +248,35 @@ export default class DHRoll extends BaseRoll {
         });
     }
 
+    /**
+     * Sums the values of all instances of ActiveEffect.change values from the toggleable bonusEffects of the roll 
+     * that match a given change.key partial path. Only for use on ActiveEffects.change with strictly numerical values.
+     * @param {string} path The full or partial effect.change key 
+     * @returns {number}
+     */
+    getTotalBonus(path) {
+        return Object.values(this.options.bonusEffects).reduce((acc, effect) => {
+            if (!effect.selected) return acc;
+            return acc + effect.changes.reduce((acc, change) => {
+                if (!change.key.includes(path)) return acc;
+                const changeValue = game.system.api.documents.DhActiveEffect.getChangeValue(
+                    this.data,
+                    change,
+                    effect.origEffect
+                );
+                
+                return Number.isNumeric(changeValue) ? acc + changeValue : acc; 
+            }, 0);
+        }, 0);
+    }
+
+    /**
+     * Grabs all instances of ActiveEffect.change values from the toggleable bonusEffects of the roll 
+     * that match a given change.key partial path.
+     * @param {string} path The full or partial effect.change key 
+     * @param {string} label The label to give the modifiers
+     * @returns {[{ label: string, value: any} ]}
+     */
     getBonus(path, label) {
         const modifiers = [];
         for (const effect of Object.values(this.options.bonusEffects)) {