diff --git a/.gitignore b/.gitignore
index 4bd6cec..670b156 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 
 # Output
 /dist
+/venv
 
 pantograph/pantograph
 pantograph/lean-toolchain
diff --git a/.gitmodules b/.gitmodules
index caa4dcb..6b49ada 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "src"]
 	path = src
 	url = https://git.leni.sh/aniva/Pantograph.git
+	
\ No newline at end of file
diff --git a/README.md b/README.md
index d44c1c2..f66d9f2 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,10 @@
 Python interface to the Pantograph library
 
 ## Getting started
+Update submodule
+``` bash
+git submodule update --init
+```
 
 Execute
 ```bash
diff --git a/pantograph/gen_tactic.py b/pantograph/gen_tactic.py
new file mode 100644
index 0000000..68c7ccb
--- /dev/null
+++ b/pantograph/gen_tactic.py
@@ -0,0 +1,140 @@
+from pantograph.server import Server
+from pantograph.expr import Variable, Goal, TacticCalc
+import  unittest
+import sglang as sgl
+
+
+
+
+@sgl.function
+def multi_turn_question(s, question_1, question_2):
+    s += sgl.system("You are a helpful assistant.")
+    s += sgl.user(question_1)
+    s += sgl.assistant(sgl.gen("answer_1", max_tokens=256))
+    s += sgl.user(question_2)
+    s += sgl.assistant(sgl.gen("answer_2", max_tokens=256))
+
+
+@sgl.function
+def select_tactic(s, state):
+    s += sgl.system("You are an expert in Lean. Choose the next one tactic to run given the current proof state and goals.")
+    s += sgl.user("The current proof state: GoalState(state_id=0, goals=[Goal(variables=[], target='∀ (a b: Nat), (b = 2) -> 1 + a + 1 = a + b', name=None, is_conversion=False)])")
+    s += sgl.assistant("```intros a b h```")
+    s += sgl.user("The current proof state: GoalState(state_id=1, goals=[Goal(variables=[Variable(t='Nat', v=None, name='a'), Variable(t='Nat', v=None, name='b'), Variable(t='b = 2', v=None, name='h')], target='1 + a + 1 = a + b', name=None, is_conversion=False)])")
+    s += sgl.assistant('TacticCalc("1 + a + 1 = a + 1 + 1")')
+    s += sgl.user("The current proof state: " + str(state))
+    with s.copy() as tmp:
+        tmp += sgl.assistant(sgl.gen("tactic", max_tokens=64))
+        print("==tmp===")
+        print(tmp["tactic"])
+        tactic = extract_code_from_llm_output(tmp["tactic"])
+    s += sgl.assistant("```"+tactic+"```")
+    return tactic
+
+
+    
+def extract_code_from_llm_output(reply):
+    i = reply.find("```lean")
+    if i != -1:
+        reply = reply[i + 7:]
+        i = reply.find("```")
+        reply = reply[:i]
+        return reply
+    i = reply.find("```")
+    if i != -1:
+        reply = reply[i + 3:]
+        i = reply.find("```")
+        reply = reply[:i]
+        return reply
+    return reply
+
+class TestServerSGL(unittest.TestCase):
+
+    def test_conv_calc_sgl(self):
+        sgl.set_default_backend(sgl.OpenAI("gpt-4"))
+
+        server = Server()
+        state0 = server.goal_start("∀ (a b: Nat), (b = 2) -> 1 + a + 1 = a + b")
+        print("==========state0============")
+        print(state0)
+        variables = [
+            Variable(name="a", t="Nat"),
+            Variable(name="b", t="Nat"),
+            Variable(name="h", t="b = 2"),
+        ]
+
+        state1 = server.goal_tactic(state0, goal_id=0, tactic="intro a b h")
+        print("==========state1============")
+        print(state1)
+        state2 = server.goal_tactic(state1, goal_id=0, tactic=TacticCalc("1 + a + 1 = a + 1 + 1"))
+        print("==========state2============")
+        print(state2)
+        self.assertEqual(state2.goals, [
+            Goal(
+                variables,
+                target="1 + a + 1 = a + 1 + 1",
+                name='calc',
+            ),
+            Goal(
+                variables,
+                target="a + 1 + 1 = a + b",
+            ),
+        ])
+        state = select_tactic.run(str(state2))
+        tactic = state.ret_value
+        for m in state.messages():
+            print(m["role"], ":", m["content"])
+
+        print("\n-- tactic --\n", tactic)
+        
+        state3 = server.goal_tactic(state2, goal_id=1, tactic=tactic)
+        print("==========state3============")
+        print(state3)
+        # state4 = server.goal_tactic(state3, goal_id=0, tactic="rw [Nat.add_assoc]")
+        # print("==========state4============")
+        # print(state4)        
+        # self.assertTrue(state4.is_solved)
+
+
+        # print("==========state2============")
+        # print(state2)
+        # state_c1 = server.goal_conv_begin(state2, goal_id=0)
+        # print("==========state c1============")
+        # print(state_c1)
+        # state_c2 = server.goal_tactic(state_c1, goal_id=0, tactic="rhs")
+        # print("==========state c2============")
+        # print(state_c2)
+        # state_c3 = server.goal_tactic(state_c2, goal_id=0, tactic="rw [Nat.add_comm]")
+        # print("==========state c3============")
+        # print(state_c3)
+        # state_c4 = server.goal_conv_end(state_c3)
+        # print("==========state c4============")
+        # print(state_c4)
+
+        # state_c5 = server.goal_tactic(state_c4, goal_id=0, tactic="rfl")
+        # print("==========state c5============")
+        # print(state_c5)
+        # self.assertTrue(state_c5.is_solved)
+
+        # print()
+
+
+    def test_sglang_openai(self):
+        sgl.set_default_backend(sgl.OpenAI("gpt-4"))
+
+        print('\n----- Test sglang ---')
+        state = multi_turn_question.run(
+            question_1="What is the capital of the United States?",
+            question_2="List two local attractions.",
+        )
+
+        for m in state.messages():
+            print(m["role"], ":", m["content"])
+
+        print("\n-- answer_1 --\n", state["answer_1"])
+
+   
+if __name__ == '__main__':
+
+    unittest.main()
+
diff --git a/pantograph/server.py b/pantograph/server.py
index 63037c7..4701e1f 100644
--- a/pantograph/server.py
+++ b/pantograph/server.py
@@ -215,4 +215,4 @@ class TestServer(unittest.TestCase):
 
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()
\ No newline at end of file