diff --git a/Assets/Cryville/Crtr/ChartPlayer.cs b/Assets/Cryville/Crtr/ChartPlayer.cs
index 0295c5f..7c2e61a 100644
--- a/Assets/Cryville/Crtr/ChartPlayer.cs
+++ b/Assets/Cryville/Crtr/ChartPlayer.cs
@@ -504,11 +504,11 @@ namespace Cryville.Crtr {
 				cbus = batcher.Batch();
 				Logger.Log("main", 0, "Load/WorkerThread", "Batched {0} event batches", cbus.events.Count);
 
+				LoadSkin(info.skinFile);
+
 				judge = new Judge(pruleset);
 				etor.ContextJudge = judge;
 
-				LoadSkin(info.skinFile);
-
 				cbus.AttachSystems(pskin, judge);
 				Logger.Log("main", 0, "Load/WorkerThread", "Attaching handlers");
 				var ch = new ChartHandler(chart, dir);
diff --git a/Assets/Cryville/Crtr/Judge.cs b/Assets/Cryville/Crtr/Judge.cs
index 256b175..ee77eaa 100644
--- a/Assets/Cryville/Crtr/Judge.cs
+++ b/Assets/Cryville/Crtr/Judge.cs
@@ -31,9 +31,12 @@ namespace Cryville.Crtr {
 			_etor = ChartPlayer.etor;
 			_rs = rs;
 			foreach (var s in rs.scores) {
-				var name = s.Key.Key;
-				scoreDefs.Add(name, s.Value);
-				scores.Add(name, s.Value.init);
+				var key = s.Key;
+				scoreSrcs.Add(key.Key, new PropSrc.Float(() => scores[key.Key]));
+				scoreOps.Add(key.Key, new PropOp.Float(v => scores[key.Key] = v));
+				scoreFmtKeys.Add(key.Key, IdentifierManager.SharedInstance.Request("_score_" + (string)key.Name));
+				scoreDefs.Add(key.Key, s.Value);
+				scores.Add(key.Key, s.Value.init);
 			}
 		}
 		public void Prepare(float st, float et, Identifier input, JudgeDefinition def, ContainerState container) {
@@ -143,12 +146,24 @@ namespace Cryville.Crtr {
 				actlist.Insert(index, ev);
 			}
 		}
-		void UpdateScore(Dictionary<ScoreOperation, PdtExpression> scores) {
-			foreach (var score in scores) {
-				// TODO
+		void UpdateScore(Dictionary<ScoreOperation, PdtExpression> scoreops) {
+			foreach (var scoreop in scoreops) {
+				var key = scoreop.Key;
+				_etor.ContextSelfValue = scoreSrcs[key.name.Key];
+				_etor.Evaluate(scoreOps[key.name.Key], scoreop.Value);
+				foreach (var s in _rs.scores) {
+					if (s.Value.value != null) {
+						_etor.ContextSelfValue = scoreSrcs[s.Key.Key];
+						_etor.Evaluate(scoreOps[s.Key.Key], s.Value.value);
+					}
+				}
 			}
+			ScoreCache.Clear();
 		}
-		public readonly Dictionary<int, ScoreDefinition> scoreDefs = new Dictionary<int, ScoreDefinition>();
+		readonly Dictionary<int, int> scoreFmtKeys = new Dictionary<int, int>();
+		readonly Dictionary<int, PropSrc> scoreSrcs = new Dictionary<int, PropSrc>();
+		readonly Dictionary<int, PropOp> scoreOps = new Dictionary<int, PropOp>();
+		readonly Dictionary<int, ScoreDefinition> scoreDefs = new Dictionary<int, ScoreDefinition>();
 		public readonly Dictionary<int, float> scores = new Dictionary<int, float>();
 		readonly Dictionary<int, string> ScoreCache = new Dictionary<int, string>();
 		readonly object _lock = new object();
@@ -156,7 +171,7 @@ namespace Cryville.Crtr {
 			lock (_lock) {
 				if (ScoreCache.Count == 0) {
 					foreach (var s in scores)
-						ScoreCache.Add(s.Key, s.Value.ToString(scoreDefs[s.Key].format));
+						ScoreCache.Add(scoreFmtKeys[s.Key], s.Value.ToString(scoreDefs[s.Key].format));
 				}
 				return ScoreCache;
 			}
diff --git a/Assets/Cryville/Crtr/PdtEvaluator.cs b/Assets/Cryville/Crtr/PdtEvaluator.cs
index 792fa9f..588409a 100644
--- a/Assets/Cryville/Crtr/PdtEvaluator.cs
+++ b/Assets/Cryville/Crtr/PdtEvaluator.cs
@@ -24,6 +24,7 @@ namespace Cryville.Crtr {
 				var id = new Identifier(name);
 				PropSrc prop;
 				string str;
+				float num;
 				if (ContextEvent != null && ContextEvent.PropSrcs.TryGetValue(name, out prop)) {
 					prop.Get(out type, out value);
 				}
@@ -31,6 +32,12 @@ namespace Cryville.Crtr {
 					var vec = ContextState.GetRawValue(id);
 					new VectorSrc(() => vec).Get(out type, out value);
 				}
+				else if (ContextJudge != null && ContextJudge.scores.TryGetValue(name, out num)) {
+					type = PdtInternalType.Number;
+					LoadNum(num);
+					value = _numbuf;
+					RevokePotentialConstant();
+				}
 				else if (ContextJudge != null && ContextJudge.GetFormattedScoreStrings().TryGetValue(name, out str)) {
 					type = PdtInternalType.String;
 					value = GetBytes(str);
diff --git a/Assets/Cryville/Crtr/Ruleset.cs b/Assets/Cryville/Crtr/Ruleset.cs
index 1c0322f..b85810e 100644
--- a/Assets/Cryville/Crtr/Ruleset.cs
+++ b/Assets/Cryville/Crtr/Ruleset.cs
@@ -45,8 +45,12 @@ namespace Cryville.Crtr {
 			}
 			foreach (var j in judges.Values) {
 				if (j.hit != null) etor.Optimize(j.hit);
-				if (j.scores != null) foreach (var e in j.scores.Values) {
-					etor.Optimize(e);
+				if (j.scores != null) {
+					foreach (var s in j.scores) {
+						if (s.Key.op != default(Identifier))
+							etor.PatchCompound(s.Key.name.Key, s.Key.op.Key, s.Value);
+						etor.Optimize(s.Value);
+					}
 				}
 			}
 			foreach (var s in scores.Values) {