diff --git a/include/token.h b/include/token.h
index 89e489e..631b323 100644
--- a/include/token.h
+++ b/include/token.h
@@ -22,7 +22,7 @@ enum class TokenType {
 	FN,	 // Fn
 	RETURN,	 // return
 	TYPEOF,	 // typeof
-	PUBLIC,	 // public
+	PRIVATE,	 // private
 	ID,	 // identifier
 	EXCEED
 };
diff --git a/src/scan.cpp b/src/scan.cpp
index bd74ca8..891f95a 100644
--- a/src/scan.cpp
+++ b/src/scan.cpp
@@ -63,8 +63,8 @@ vector<Token> scan(string s) {
 				type = TokenType::RETURN, t.clear();
 			} else if (t == "typeof") {
 				type = TokenType::TYPEOF, t.clear();
-			} else if (t == "public") {
-				type = TokenType::PUBLIC, t.clear();
+			} else if (t == "private") {
+				type = TokenType::PRIVATE, t.clear();
 			} else {
 				type = TokenType::ID;
 			}
diff --git a/src/token.cpp b/src/token.cpp
index 873a0cd..c29fb90 100644
--- a/src/token.cpp
+++ b/src/token.cpp
@@ -18,5 +18,5 @@ std::string token_mp[] = {",",
 			  "Fn",
 			  "return",
 			  "typeof",
-			  "public",
+			  "private",
 			  "ID"};
diff --git a/src/work.cpp b/src/work.cpp
index 095ca69..d9b2c0e 100644
--- a/src/work.cpp
+++ b/src/work.cpp
@@ -82,7 +82,7 @@ shared_ptr<ValType> _createType(shared_ptr<Struct>);
 shared_ptr<ValType> createType();
 vector<shared_ptr<ValType>> createTypes();
 vector<pair<string, shared_ptr<TemplateType>>> createTems();
-vector<pair<string, shared_ptr<ValType>>> createPars();
+vector<pair<string, shared_ptr<ValType>>> createPars(map<string, shared_ptr<ValType>>* = nullptr);
 pair<string, shared_ptr<Struct>> createStruct();
 pair<string, shared_ptr<ValType>> createVar();
 
@@ -384,11 +384,15 @@ vector<pair<string, shared_ptr<TemplateType>>> createTems() {
 	return tems;
 }
 
-vector<pair<string, shared_ptr<ValType>>> createPars() {
+vector<pair<string, shared_ptr<ValType>>> createPars(map<string, shared_ptr<ValType>>* vars) {
 	vector<pair<string, shared_ptr<ValType>>> pars;
 	jump(TokenType::LP);
-	if (preview(TokenType::ID)) {
+	if (!preview(TokenType::RP)) {
 		auto single = [&]() {
+			bool pub = 1;
+			if (preview(TokenType::PRIVATE)) {
+				pub = 0, pt++;
+			}
 			auto s = jump(TokenType::ID);
 			if (ndefs.find(s) != ndefs.end()) {
 				printf("error on line %d", tokens[pt - 1].line), exit(0);
@@ -399,6 +403,7 @@ vector<pair<string, shared_ptr<ValType>>> createPars() {
 			d->def_var = t;
 			ndefs[s] = static_pointer_cast<Def>(d);
 			pars.push_back({s, t});
+			if (vars != nullptr && pub) (*vars)[s]=t;
 		};
 		for (single(); preview(TokenType::COMMA); pt++, single()) {}
 	}
@@ -411,30 +416,29 @@ pair<string, shared_ptr<Struct>> createStruct() {
 	string s;
 	vector<pair<string, shared_ptr<TemplateType>>> tems;
 	vector<pair<string, shared_ptr<ValType>>> pars;
+	auto t = make_shared<Struct>();
 
 	if (preview(TokenType::ID)) {
 		s = tokens[pt++].s;
 		if (preview(TokenType::LT)) {
 			tems = createTems();
 		}
-		pars = createPars();
+		pars = createPars(&t->vars);
 	}
-	auto t = make_shared<Struct>();
 	for (const auto& pr : tems) {
 		t->c1.push_back(pr.second);
 	}
 	for (const auto& pr : pars) {
 		t->c2.push_back(pr.second);
-		t->vars[pr.first] = pr.second;
 	}
 
 	jump(TokenType::LB);
 	vector<string> defs;
 	vector<shared_ptr<Struct>> subs;
 	while (!preview(TokenType::RB)) {
-		bool pub = 0;
-		if (preview(TokenType::PUBLIC)) {
-			pub = 1, pt++;
+		bool pub = 1;
+		if (preview(TokenType::PRIVATE)) {
+			pub = 0, pt++;
 		}
 		if (preview({TokenType::STRUCT, TokenType::ID})) {
 			auto tt = createStruct();