diff --git a/Fairy.Debugger.DebugInfo.cs b/Fairy.Debugger.DebugInfo.cs
index cf38699..01f43df 100644
--- a/Fairy.Debugger.DebugInfo.cs
+++ b/Fairy.Debugger.DebugInfo.cs
@@ -20,6 +20,7 @@ public struct SourceFilenameAndLineNum { public string sourceFilename; public ui
         public readonly ConcurrentDictionary<UInt160, JObject> contractScriptHashToNefDbgNfo = new();
         struct DumpNefPatterns
         {
+            public DumpNefPatterns() { }
             public Regex opCodeRegex = new Regex(@"^(\d+)\s(.*?)\s?(#\s.*)?$");  // 8039 SYSCALL 62-7D-5B-52 # System.Contract.Call SysCall
             public Regex sourceCodeRegex = new Regex(@"^#\sCode\s(.*\.cs)\sline\s(\d+):\s""(.*)""$");  // # Code NFTLoan.cs line 523: "ExecutionEngine.Assert((bool)Contract.Call(token, "transfer", CallFlags.All, tenant, Runtime.ExecutingScriptHash, neededAmount, tokenId, TRANSACTION_DATA), "NFT payback failed");"
             public Regex methodStartRegex = new Regex(@"^# Method\sStart\s(.*)$");  // # Method Start NFTLoan.NFTLoan.FlashBorrowDivisible
diff --git a/Fairy.Debugger.cs b/Fairy.Debugger.cs
index b50e363..5046024 100644
--- a/Fairy.Debugger.cs
+++ b/Fairy.Debugger.cs
@@ -368,6 +368,14 @@ protected virtual JToken GetEvaluationStack(JArray _params)
             return new JArray(newEngine.InvocationStack.ElementAt(invocationStackIndex).EvaluationStack.Select(p => ToJson(p, settings.MaxIteratorResultItems)));
         }
 
+        [RpcMethod]
+        protected virtual JToken GetInvocationStack(JArray _params)
+        {
+            string session = _params[0].AsString();
+            FairyEngine newEngine = sessionStringToFairySession[session].debugEngine;
+            return new JArray(newEngine.InvocationStack.Select(p => ToJson(p.InstructionPointer, settings.MaxIteratorResultItems)));
+        }
+
         [RpcMethod]
         protected virtual JToken GetInstructionPointer(JArray _params)
         {
diff --git a/Fairy.Tester.cs b/Fairy.Tester.cs
index 9a3f36d..af196b8 100644
--- a/Fairy.Tester.cs
+++ b/Fairy.Tester.cs
@@ -38,6 +38,28 @@ protected virtual JObject InvokeFunctionWithSession(JArray _params)
             return GetInvokeResultWithSession(session, writeSnapshot, script, signers, witnesses);
         }
 
+        [RpcMethod]
+        protected virtual JObject InvokeManyWithSession(JArray _params)
+        {
+            string session = _params[0].AsString();
+            bool writeSnapshot = _params[1].AsBoolean();
+            Signer[]? signers = _params.Count >= 4 ? SignersFromJson((JArray)_params[3], system.Settings) : null;
+            Witness[]? witnesses = _params.Count >= 5 ? WitnessesFromJson((JArray)_params[4]) : null;
+            byte[] script = Array.Empty<byte>();
+            using (ScriptBuilder sb = new())
+            {
+                foreach (JArray invokeParams in (JArray)_params[2])
+                {
+                    UInt160 script_hash = UInt160.Parse(invokeParams[0].AsString());
+                    string operation = invokeParams[1].AsString();
+                    ContractParameter[] args = invokeParams.Count >= 3 ? ((JArray)invokeParams[2]).Select(p => ContractParameter.FromJson((JObject)p)).ToArray() : System.Array.Empty<ContractParameter>();
+                    sb.EmitDynamicCall(script_hash, operation, args);
+                }
+                script = sb.ToArray();
+            }
+            return GetInvokeResultWithSession(session, writeSnapshot, script, signers, witnesses);
+        }
+
         [RpcMethod]
         protected virtual JObject InvokeScriptWithSession(JArray _params)
         {