diff --git a/app/imports/api/engine/action/ActionEngine.test.ts b/app/imports/api/engine/action/ActionEngine.test.ts
index 9d079adc..31041ba8 100644
--- a/app/imports/api/engine/action/ActionEngine.test.ts
+++ b/app/imports/api/engine/action/ActionEngine.test.ts
@@ -205,10 +205,12 @@ describe('Interrupt action system', function () {
 function createAction(prop, targetIds?) {
   const action: EngineAction = {
     creatureId: prop.root.id,
-    rootPropId: prop._id,
     results: [],
     taskCount: 0,
-    targetIds,
+    task: {
+      prop,
+      targetIds,
+    }
   };
   return EngineActions.insertAsync(action);
 }
diff --git a/app/imports/api/engine/action/applyProperties/applyDamageProperty.test.ts b/app/imports/api/engine/action/applyProperties/applyDamageProperty.test.ts
index a93e3f77..a77c1ba3 100644
--- a/app/imports/api/engine/action/applyProperties/applyDamageProperty.test.ts
+++ b/app/imports/api/engine/action/applyProperties/applyDamageProperty.test.ts
@@ -8,8 +8,8 @@ import {
 } from '/imports/api/engine/action/functions/actionEngineTest.testFn';
 
 const [
-  creatureId, targetCreatureId, targetCreature2Id, damageTargetId, damageSelfId, targetCreatureHitPointsId, targetCreature2HitPointsId, selfHitPointsId
-] = getRandomIds(100);
+  creatureId, targetCreatureId, targetCreature2Id, damageTargetId, damageSelfId, targetCreatureHitPointsId, targetCreature2HitPointsId, selfHitPointsId, damageWithEffectsId, effectId, effect2Id,
+] = getRandomIds(20);
 
 const actionTestCreature = {
   _id: creatureId,
@@ -34,6 +34,29 @@ const actionTestCreature = {
       variableName: 'hitPoints',
       baseValue: { calculation: '20' },
     },
+    {
+      _id: damageWithEffectsId,
+      type: 'damage',
+      target: 'target',
+      amount: { calculation: '1d13 + 3' },
+      tags: ['tag']
+    },
+    {
+      _id: effectId,
+      type: 'effect',
+      operation: 'add',
+      amount: { calculation: '1' },
+      targetByTags: true,
+      targetTags: ['tag'],
+    },
+    {
+      _id: effect2Id,
+      type: 'effect',
+      operation: 'mul',
+      amount: { calculation: '2' },
+      targetByTags: true,
+      targetTags: ['tag'],
+    },
   ],
 }
 
@@ -187,4 +210,35 @@ describe('Apply Damage Properties', function () {
       ],
     }]);
   });
+
+  it.only('Applies effects when doing damage', async function () {
+    const action = await runActionById(damageWithEffectsId, [targetCreatureId]);
+    assert.exists(action);
+    assert.deepEqual(allMutations(action), [{
+      contents: [
+        {
+          inline: true,
+          name: 'Damage',
+          value: '(1d13 [7] + 4) * 2',
+        }
+      ],
+      targetIds: [targetCreatureId],
+    }, {
+      contents: [
+        {
+          inline: true,
+          name: 'Attribute damaged',
+          value: '−22 Hit Points',
+        }
+      ],
+      targetIds: [targetCreatureId],
+      updates: [
+        {
+          propId: targetCreatureHitPointsId,
+          type: 'attribute',
+          inc: { damage: 22, value: -22 },
+        },
+      ],
+    }]);
+  });
 });
diff --git a/app/imports/api/engine/action/functions/actionEngineTest.testFn.ts b/app/imports/api/engine/action/functions/actionEngineTest.testFn.ts
index 722c0892..4c389c19 100644
--- a/app/imports/api/engine/action/functions/actionEngineTest.testFn.ts
+++ b/app/imports/api/engine/action/functions/actionEngineTest.testFn.ts
@@ -82,10 +82,12 @@ export async function runActionById(propId, targetIds?, userInput = inputProvide
 function createAction(prop: any, targetIds?: string[]) {
   const action: EngineAction = {
     creatureId: prop.root.id,
-    rootPropId: prop._id,
     results: [],
     taskCount: 0,
-    targetIds,
+    task: {
+      prop,
+      targetIds: targetIds || [],
+    }
   };
   return EngineActions.insertAsync(action);
 }
diff --git a/app/imports/api/engine/action/functions/recalculateCalculation.ts b/app/imports/api/engine/action/functions/recalculateCalculation.ts
index 7e01b481..1258cfd2 100644
--- a/app/imports/api/engine/action/functions/recalculateCalculation.ts
+++ b/app/imports/api/engine/action/functions/recalculateCalculation.ts
@@ -48,7 +48,7 @@ export default async function recalculateCalculation(
   // Resolve the modified valueNode, use the same context
   const {
     result: finalResult
-  } = await resolve(parseLevel, calcObj.parseNode, scope, context);
+  } = await resolve(parseLevel, calcObj.valueNode, scope, context);
 
   // Store the errors
   calcObj.errors = context.errors;
diff --git a/app/imports/api/engine/computation/computeComputation/computeByType/computeCalculation.js b/app/imports/api/engine/computation/computeComputation/computeByType/computeCalculation.js
index 46852665..09ba91d4 100644
--- a/app/imports/api/engine/computation/computeComputation/computeByType/computeCalculation.js
+++ b/app/imports/api/engine/computation/computeComputation/computeByType/computeCalculation.js
@@ -133,7 +133,7 @@ export function aggregateCalculationEffects(calcObj, getEffectFromId) {
   // Multiply
   if (aggregator.mul) {
     // Wrap the previous node in brackets if it's another operator
-    if (calcObj.parseType === 'operator') {
+    if (calcObj.valueNode.parseType === 'operator') {
       calcObj.valueNode = parenthesis.create({
         content: calcObj.valueNode
       });