diff --git a/qse/include/qse/awk/Awk.hpp b/qse/include/qse/awk/Awk.hpp
index 1b9f8a47..b8be7d98 100644
--- a/qse/include/qse/awk/Awk.hpp
+++ b/qse/include/qse/awk/Awk.hpp
@@ -1046,10 +1046,20 @@ public:
 	/// The call() function invokes a function named \a name.
 	///
 	int call (
-		const char_t* name,  ///< function name
-		Value*        ret,   ///< return value holder
-		const Value*  args,  ///< argument array
-		size_t        nargs  ///< number of arguments
+		const qse_mchar_t* name,  ///< function name
+		Value*             ret,   ///< return value holder
+		const Value*       args,  ///< argument array
+		size_t             nargs  ///< number of arguments
+	);
+
+	///
+	/// The call() function invokes a function named \a name.
+	///
+	int call (
+		const qse_wchar_t* name,  ///< function name
+		Value*             ret,   ///< return value holder
+		const Value*       args,  ///< argument array
+		size_t             nargs  ///< number of arguments
 	);
 
 	///
diff --git a/qse/include/qse/awk/awk.h b/qse/include/qse/awk/awk.h
index a8cf0b85..1b1e2c3b 100644
--- a/qse/include/qse/awk/awk.h
+++ b/qse/include/qse/awk/awk.h
@@ -3341,10 +3341,10 @@ qse_mchar_t* qse_awk_rtx_wcsntombsdup (
 
 
 /**
- * The qse_getawknilval() function returns the pointer to the predefined
+ * The qse_get_awk_nil_val() function returns the pointer to the predefined
  * nil value. you can call this without creating a runtime context. 
  */
-QSE_EXPORT qse_awk_val_t* qse_getawknilval (
+QSE_EXPORT qse_awk_val_t* qse_get_awk_nil_val (
 	void
 );
 
diff --git a/qse/lib/awk/Awk.cpp b/qse/lib/awk/Awk.cpp
index 4773c52c..8363b1fa 100644
--- a/qse/lib/awk/Awk.cpp
+++ b/qse/lib/awk/Awk.cpp
@@ -305,19 +305,19 @@ void Awk::Value::operator delete[] (void* ptr)
 }
 #endif
 
-Awk::Value::Value (): run (QSE_NULL), val (qse_getawknilval()) 
+Awk::Value::Value (): run (QSE_NULL), val (qse_get_awk_nil_val()) 
 {
 	cached.str.ptr = QSE_NULL;
 	cached.str.len = 0;
 }
 
-Awk::Value::Value (Run& run): run (&run), val (qse_getawknilval()) 
+Awk::Value::Value (Run& run): run (&run), val (qse_get_awk_nil_val()) 
 {
 	cached.str.ptr = QSE_NULL;
 	cached.str.len = 0;
 }
 
-Awk::Value::Value (Run* run): run (run), val (qse_getawknilval()) 
+Awk::Value::Value (Run* run): run (run), val (qse_get_awk_nil_val()) 
 {
 	cached.str.ptr = QSE_NULL;
 	cached.str.len = 0;
@@ -380,7 +380,7 @@ void Awk::Value::clear ()
 		}
 
 		run = QSE_NULL;
-		val = qse_getawknilval();
+		val = qse_get_awk_nil_val();
 	}
 }
 
@@ -1124,13 +1124,13 @@ void Awk::retrieveError (Run* run)
 
 static void fini_xtn (qse_awk_t* awk)
 {
-	xtn_t* xtn = (xtn_t*)qse_awk_getxtn(awk);
+	xtn_t* xtn = GET_XTN(awk);
 	xtn->awk->uponClosing ();
 }
 
 static void clear_xtn (qse_awk_t* awk)
 {
-	xtn_t* xtn = (xtn_t*)qse_awk_getxtn(awk);
+	xtn_t* xtn = GET_XTN(awk);
 	xtn->awk->uponClearing ();
 }
 
@@ -1311,7 +1311,7 @@ int Awk::loop (Value* ret)
 	return 0;
 }
 
-int Awk::call (const char_t* name, Value* ret, const Value* args, size_t nargs)
+int Awk::call (const qse_mchar_t* name, Value* ret, const Value* args, size_t nargs)
 {
 	QSE_ASSERT (this->awk != QSE_NULL);
 	QSE_ASSERT (this->runctx.rtx != QSE_NULL);
@@ -1336,7 +1336,48 @@ int Awk::call (const char_t* name, Value* ret, const Value* args, size_t nargs)
 		for (size_t i = 0; i < nargs; i++) ptr[i] = (val_t*)args[i];
 	}
 
-	val_t* rv = qse_awk_rtx_call(this->runctx.rtx, name, ptr, nargs);
+	val_t* rv = qse_awk_rtx_callwithmbs(this->runctx.rtx, name, ptr, nargs);
+
+	if (ptr != QSE_NULL && ptr != buf) qse_awk_freemem (awk, ptr);
+
+	if (rv == QSE_NULL) 
+	{
+		this->retrieveError (&this->runctx);
+		return -1;
+	}
+
+	ret->setVal (&this->runctx, rv);
+
+	qse_awk_rtx_refdownval (this->runctx.rtx, rv);
+	return 0;
+}
+
+int Awk::call (const qse_wchar_t* name, Value* ret, const Value* args, size_t nargs)
+{
+	QSE_ASSERT (this->awk != QSE_NULL);
+	QSE_ASSERT (this->runctx.rtx != QSE_NULL);
+
+	val_t* buf[16];
+	val_t** ptr = QSE_NULL;
+
+	if (args != QSE_NULL)
+	{
+		if (nargs <= QSE_COUNTOF(buf)) ptr = buf;
+		else
+		{
+			ptr = (val_t**)qse_awk_allocmem(awk, QSE_SIZEOF(val_t*) * nargs);
+			if (ptr == QSE_NULL)
+			{
+				this->runctx.setError (QSE_AWK_ENOMEM);
+				this->retrieveError (&this->runctx);
+				return -1;
+			}
+		}
+
+		for (size_t i = 0; i < nargs; i++) ptr[i] = (val_t*)args[i];
+	}
+
+	val_t* rv = qse_awk_rtx_callwithwcs(this->runctx.rtx, name, ptr, nargs);
 
 	if (ptr != QSE_NULL && ptr != buf) qse_awk_freemem (awk, ptr);
 
diff --git a/qse/lib/awk/val.c b/qse/lib/awk/val.c
index cf34219d..da736aa0 100644
--- a/qse/lib/awk/val.c
+++ b/qse/lib/awk/val.c
@@ -42,7 +42,7 @@ qse_awk_val_t* qse_awk_val_nil = (qse_awk_val_t*)&awk_nil;
 qse_awk_val_t* qse_awk_val_zls = (qse_awk_val_t*)&awk_zls; 
 qse_awk_val_t* qse_awk_val_zlm = (qse_awk_val_t*)&awk_zlm;
 
-qse_awk_val_t* qse_getawknilval (void)
+qse_awk_val_t* qse_get_awk_nil_val (void)
 {
 	return (qse_awk_val_t*)&awk_nil;
 }