diff --git a/app/imports/api/creature/creatureProperties/methods/getSlotFillFilter.js b/app/imports/api/creature/creatureProperties/methods/getSlotFillFilter.js
index 177225b0..21df0bdb 100644
--- a/app/imports/api/creature/creatureProperties/methods/getSlotFillFilter.js
+++ b/app/imports/api/creature/creatureProperties/methods/getSlotFillFilter.js
@@ -27,14 +27,10 @@ export default function getSlotFillFilter({slot, libraryIds}){
     filter.variableName = slot.variableName;
 
     // Only search for levels the class needs
-    const levels = [];
     if (slot.missingLevels && slot.missingLevels.length) {
-      levels.push(...slot.missingLevels);
-    } else if (slot.level) {
-      levels.push(slot.level);
-    }
-    if (levels.length) {
-      filter.level = {$or: levels};
+      filter.level = {$in: slot.missingLevels};
+    } else {
+      filter.level = (slot.level || 0) + 1;
     }
   }
   let tagsOr = [];
diff --git a/app/imports/server/publications/library.js b/app/imports/server/publications/library.js
index 00a45a5b..ebfdc936 100644
--- a/app/imports/server/publications/library.js
+++ b/app/imports/server/publications/library.js
@@ -12,6 +12,8 @@ const LIBRARY_NODE_TREE_FIELDS = {
   order: 1,
   parent: 1,
   ancestors: 1,
+  // SlotFillers
+  slotQuantityFilled: 1,
   // Effect
   operation: 1,
   targetTags: 1,
diff --git a/app/imports/ui/creature/slots/LevelUpDialog.vue b/app/imports/ui/creature/slots/LevelUpDialog.vue
index 4eba1043..7a09eb1b 100644
--- a/app/imports/ui/creature/slots/LevelUpDialog.vue
+++ b/app/imports/ui/creature/slots/LevelUpDialog.vue
@@ -26,7 +26,6 @@
       :string="model.description"
     />
     <p>
-      {{ slotPropertyTypeName }} with tags:
       <property-tags
         v-for="(tags, index) in tagsSearched.or"
         :key="index"
@@ -247,12 +246,6 @@ export default {
       });
       return {or, not};
     },
-    slotPropertyTypeName(){
-      if (!this.model) return;
-      if (!this.model.slotType) return 'Property';
-      let propName = getPropertyName(this.model.slotType);
-      return propName;
-    },
   },
   methods: {
     loadMore(){
@@ -352,7 +345,7 @@ export default {
       return names;
     },
     libraryNodes(){
-      let filter = getSlotFillFilter({slot: this.model});
+      let filter = getSlotFillFilter({ slot: this.model });
       let nodes = LibraryNodes.find(filter, {
         sort: {name: 1, order: 1}
       }).fetch();
diff --git a/app/imports/ui/properties/viewers/ClassViewer.vue b/app/imports/ui/properties/viewers/ClassViewer.vue
index d474faec..ead3181c 100644
--- a/app/imports/ui/properties/viewers/ClassViewer.vue
+++ b/app/imports/ui/properties/viewers/ClassViewer.vue
@@ -28,10 +28,10 @@
           </div>
         </div>
       </property-field>
-      <property-description
+      <property-field
         name="Missing Levels"
         mono
-        :model="model.missingLevels &&
+        :value="model.missingLevels &&
           (model.missingLevels.length || undefined) &&
           model.missingLevels.join(', ')
         "
@@ -73,6 +73,7 @@
 
 <script lang="js">
 import propertyViewerMixin from '/imports/ui/properties/viewers/shared/propertyViewerMixin.js';
+import insertPropertyFromLibraryNode from '/imports/api/creature/creatureProperties/methods/insertPropertyFromLibraryNode.js';
 
 export default {
   mixins: [propertyViewerMixin],
@@ -83,13 +84,25 @@ export default {
   },
   methods: {
     levelUpDialog(){
+      let classId = this.model._id;
       this.$store.commit('pushDialogStack', {
         component: 'level-up-dialog',
         elementId: 'level-up-btn',
         data: {
-          creatureId: this.creatureId,
+          creatureId: this.context.creatureId,
           classId: this.model._id,
         },
+        callback(nodeIds){
+          if (!nodeIds || !nodeIds.length) return;
+          let newPropertyId = insertPropertyFromLibraryNode.call({
+            nodeIds,
+            parentRef: {
+              'id': classId,
+              'collection': 'creatureProperties',
+            },
+          });
+          return `tree-node-${newPropertyId}`;
+        }
       });
     },
   }