diff --git a/src/DialogHelper.cpp b/src/DialogHelper.cpp
index 7c37bc0..995f0e2 100644
--- a/src/DialogHelper.cpp
+++ b/src/DialogHelper.cpp
@@ -77,7 +77,7 @@ namespace YYCC::DialogHelper {
 				return false;
 
 			// convert pattern and join them
-			std::string joined_modes(YYCC::StringHelper::Join(it.second, u8";"));
+			std::string joined_modes(YYCC::StringHelper::Join(it.second, ";"));
 			WinFileFilters::WinFilterModes modes;
 			if (!YYCC::EncodingHelper::UTF8ToWchar(joined_modes.c_str(), modes))
 				return false;
diff --git a/src/ParserHelper.hpp b/src/ParserHelper.hpp
index e9aff72..062679c 100644
--- a/src/ParserHelper.hpp
+++ b/src/ParserHelper.hpp
@@ -57,7 +57,8 @@ namespace YYCC::ParserHelper {
 			return false;
 		}
 	}
-	bool TryParse(const std::string& strl, bool& num) {
+	template<typename _Ty, std::enable_if_t<std::is_same_v<_Ty, bool>, int> = 0>
+	bool TryParse(const std::string& strl, _Ty& num) {
 		if (strl == "true") num = true;
 		else if (strl == "false") num = false;
 		else return false;
diff --git a/testbench/main.cpp b/testbench/main.cpp
index e0d7e8b..aff8989 100644
--- a/testbench/main.cpp
+++ b/testbench/main.cpp
@@ -5,23 +5,23 @@ namespace Testbench {
 
 	static void Assert(bool condition, const char* description) {
 		if (condition) {
-			YYCC::TerminalHelper::FPrintf(stdout, YYCC_TERMCOL_LIGHT_GREEN(u8"OK: %s\n"), description);
+			YYCC::TerminalHelper::FPrintf(stdout, YYCC_TERMCOL_LIGHT_GREEN("OK: %s\n"), description);
 		} else {
-			YYCC::TerminalHelper::FPrintf(stdout, YYCC_TERMCOL_LIGHT_RED(u8"Failed: %s\n"), description);
+			YYCC::TerminalHelper::FPrintf(stdout, YYCC_TERMCOL_LIGHT_RED("Failed: %s\n"), description);
 			std::abort();
 		}
 	}
 
 	static void TerminalTestbench() {
 		YYCC::TerminalHelper::EnsureTerminalUTF8(stdout);
-		YYCC::TerminalHelper::FPuts(u8"你好世界\n", stdout);
+		YYCC::TerminalHelper::FPuts("你好世界\n", stdout);
 		YYCC::TerminalHelper::EnsureTerminalColor(stdout);
-		YYCC::TerminalHelper::FPuts(YYCC_TERMCOL_LIGHT_CYAN(u8"Colorful Terminal\n"), stdout);
+		YYCC::TerminalHelper::FPuts(YYCC_TERMCOL_LIGHT_CYAN("Colorful Terminal\n"), stdout);
 	}
 
 	static void StringTestbench() {
-		auto test_printf = YYCC::StringHelper::Printf(u8"%s == %s", u8"Hello World", u8"你好世界");
-		Assert(test_printf == u8"Hello World == 你好世界", "YYCC::StringHelper::Printf");
+		auto test_printf = YYCC::StringHelper::Printf("%s == %s", "Hello World", "你好世界");
+		Assert(test_printf == "Hello World == 你好世界", "YYCC::StringHelper::Printf");
 			
 		auto test_lower = YYCC::StringHelper::Lower("LOWER");
 		Assert(test_lower == "lower", "YYCC::StringHelper::Lower");
@@ -54,6 +54,45 @@ namespace Testbench {
 
 	static void ParserTestbench() {
 
+		// Test success TryParse
+#define TEST_MACRO(type_t, value, string_value) { \
+	std::string cache_string(string_value); \
+	type_t cache; \
+	Assert(YYCC::ParserHelper::TryParse<type_t>(cache_string, cache) && cache == value, "YYCC::StringHelper::TryParse<" #type_t ">"); \
+}
+		
+		TEST_MACRO(int8_t, INT8_C(-61), "-61");
+		TEST_MACRO(uint8_t, UINT8_C(200), "200");
+		TEST_MACRO(int16_t, INT16_C(6161), "6161");
+		TEST_MACRO(uint16_t, UINT16_C(32800), "32800");
+		TEST_MACRO(int32_t, INT32_C(61616161), "61616161");
+		TEST_MACRO(uint32_t, UINT32_C(4294967293), "4294967293");
+		TEST_MACRO(int64_t, INT64_C(616161616161), "616161616161");
+		TEST_MACRO(uint64_t, UINT64_C(9223372036854775807), "9223372036854775807");
+		TEST_MACRO(bool, true, "true");
+		
+#undef TEST_MACRO
+
+		// Test failed TryParse
+#define TEST_MACRO(type_t, value, string_value) { \
+	std::string cache_string(string_value); \
+	type_t cache; \
+	Assert(!YYCC::ParserHelper::TryParse<type_t>(cache_string, cache), "YYCC::StringHelper::TryParse<" #type_t ">"); \
+}
+		
+		TEST_MACRO(int8_t, INT8_C(-61), "6161");
+		TEST_MACRO(uint8_t, UINT8_C(200), "32800");
+		TEST_MACRO(int16_t, INT16_C(6161), "61616161");
+		TEST_MACRO(uint16_t, UINT16_C(32800), "4294967293");
+		TEST_MACRO(int32_t, INT32_C(61616161), "616161616161");
+		TEST_MACRO(uint32_t, UINT32_C(4294967293), "9223372036854775807");
+		TEST_MACRO(int64_t, INT64_C(616161616161), "616161616161616161616161");
+		TEST_MACRO(uint64_t, UINT64_C(9223372036854775807), "92233720368547758079223372036854775807");
+		TEST_MACRO(bool, true, "hello, world!");
+		
+#undef TEST_MACRO
+
+		// Test ToString
 #define TEST_MACRO(type_t, value, string_value) { \
 	type_t cache = value; \
 	std::string ret(YYCC::ParserHelper::ToString<type_t>(cache)); \
@@ -91,20 +130,20 @@ namespace Testbench {
 		filters.Add("All Files (*.*)", {"*.*"});
 		params.SetDefaultFileTypeIndex(0u);
 		if (YYCC::DialogHelper::OpenFileDialog(params, ret)) {
-			YYCC::TerminalHelper::FPrintf(stdout, u8"Open File: %s\n", ret.c_str());
+			YYCC::TerminalHelper::FPrintf(stdout, "Open File: %s\n", ret.c_str());
 		}
 		if (YYCC::DialogHelper::OpenMultipleFileDialog(params, rets)) {
-			YYCC::TerminalHelper::FPuts(u8"Open Multiple Files:\n", stdout);
+			YYCC::TerminalHelper::FPuts("Open Multiple Files:\n", stdout);
 			for (const auto& item : rets) {
-				YYCC::TerminalHelper::FPrintf(stdout, u8"\t%s\n", item.c_str());
+				YYCC::TerminalHelper::FPrintf(stdout, "\t%s\n", item.c_str());
 			}
 		}
 		if (YYCC::DialogHelper::SaveFileDialog(params, ret)) {
-			YYCC::TerminalHelper::FPrintf(stdout, u8"Save File: %s\n", ret.c_str());
+			YYCC::TerminalHelper::FPrintf(stdout, "Save File: %s\n", ret.c_str());
 		}
 		params.Clear();
 		if (YYCC::DialogHelper::OpenFolderDialog(params, ret)) {
-			YYCC::TerminalHelper::FPrintf(stdout, u8"Open Folder: %s\n", ret.c_str());
+			YYCC::TerminalHelper::FPrintf(stdout, "Open Folder: %s\n", ret.c_str());
 		}
 	}