diff --git a/src/bind.inc.php b/src/bind.inc.php
index 87f66fe..b09ae5a 100644
--- a/src/bind.inc.php
+++ b/src/bind.inc.php
@@ -121,7 +121,10 @@ function add_twig_support(\Twig\Environment $twig)
   $twig->addFilter(new \Twig\TwigFilter('bhl_type_ref', 
     function($type) 
     { 
-      return bhl_type_ref(is_string($type) ? $type : bhl_type($type));
+      if(is_string($type))
+        return "types.T(\"$type\")";
+
+      return bhl_type_ref($type);
     }
   ));
   $twig->addFilter(new \Twig\TwigFilter('native_type', 
@@ -158,11 +161,7 @@ function add_twig_support(\Twig\Environment $twig)
   $twig->addFunction(new \Twig\TwigFunction('Warn', 
     function($e) 
     {
-      //NOTE: we can't just echo the value because it will
-      //      be rendered into resulting code
-      register_shutdown_function(function() use($e) {
-        echo "WARN: $e\n";
-      });
+      Warn($e);
     }
   ));
   $twig->addFunction(new \Twig\TwigFunction('has_token', 
@@ -247,6 +246,15 @@ function add_twig_support(\Twig\Environment $twig)
   ));
 }
 
+function Warn($msg)
+{
+  //NOTE: we can't just echo the value because it will
+  //      be rendered into resulting code
+  register_shutdown_function(function() use($msg) {
+    echo "BHL BIND WARN: $msg\n";
+  });
+}
+
 function paginate($total, $step)
 {
   //pages are returned as an array where each element is in interval [N, Y)
@@ -288,24 +296,48 @@ function norm_name($name)
   return str_replace('.', '__', $name);
 }
 
-function bhl_type_ref($type_str)
+function bhl_type_ref(\mtgType $type = null)
 {
-  if(preg_match('~coro\s+func\s+((\w|\.)+)\s*\(\)~', $type_str, $ms))
-    return "types.TFunc(true, ".bhl_type_ref($ms[1]).")";
-  else if(preg_match('~coro\s+func\s+((\w|\.)+)\s*\(((\w|\.|\[|\])+)\)~', $type_str, $ms))
-    return "types.TFunc(true, ".bhl_type_ref($ms[1]).", ".bhl_type_ref($ms[3]).")";
-  else if(preg_match('~func\s+((\w|\.)+)\s*\(\)~', $type_str, $ms))
-    return "types.TFunc(false, ".bhl_type_ref($ms[1]).")";
-  else if(preg_match('~func\s+((\w|\.)+)\s*\(((\w|\.|\[|\])+)\)~', $type_str, $ms))
-    return "types.TFunc(false, ".bhl_type_ref($ms[1]).", ".bhl_type_ref($ms[3]).")";
-  else if(preg_match('~func\s+((\w|\.)+)\s*\(((\w|\.|\[|\])+)\s*,((\w|\.|\[|\])+)\)~', $type_str, $ms))
-    return "types.TFunc(false, ".bhl_type_ref($ms[1]).", ".bhl_type_ref($ms[3]).", ".bhl_type_ref($ms[5]).")";
-  else if(preg_match('~\[\]((\w|\.)+)~', $type_str, $ms))
-    return "types.TArr(".bhl_type_ref($ms[1]).")";
-  else if(preg_match('~((\w|\.)+)\,((\w|\.)+)~', $type_str, $ms))
-    return "types.T(".bhl_type_ref($ms[1]).", ".bhl_type_ref($ms[3]).")";
-  else
-    return "types.T(\"$type_str\")";
+  if($type === null)
+    return 'types.T("void")';
+
+  if($type instanceof \mtgBuiltinType)
+  {
+    if($type->isFloat() || $type->isDouble())
+      return 'types.T("float")';
+    else if($type->isInt() || $type->isUint())
+      return 'types.T("int")';
+  }
+  else if($type instanceof \mtgMetaFunc)
+  {
+    $is_coro = $type->hasToken("bhl_coroutine");
+    $str = '';
+    $str .= "types.TFunc(".($is_coro?"true":"false").", ";
+    $str .= $type->getReturnType() ? bhl_type_ref($type->getReturnType()) : bhl_type_ref(null);
+    foreach($type->getArgs() as $arg)
+      $str .= bhl_type_ref($arg->getType()) . ",";
+    $str = rtrim($str, ',');
+    $str .= ")";
+
+    return $str;
+  }
+  else if($type instanceof \mtgMultiType)
+  {
+    $str = 'types.T(';
+    foreach($type->getValues() as $sub_type)
+      $str .= bhl_type_ref($sub_type) . ",";
+    $str = rtrim($str, ",");
+    $str .= ")";
+
+    return $str;
+  }
+  else if($type instanceof \mtgArrType)
+  {
+    return 'types.TArr(' . bhl_type_ref($type->getValue()) . ')';
+  }
+  
+  //fallback
+  return 'types.T("' . $type. '")';
 }
 
 function bhl_type(\mtgType $type = null)
@@ -342,6 +374,7 @@ function bhl_type(\mtgType $type = null)
   else if($type instanceof \mtgArrType)
     return "[]" . bhl_type($type->getValue());
 
+  //fallback
   return ''.$type;
 }
 
diff --git a/tpl/macro.twig b/tpl/macro.twig
index 069f876..2c2d0de 100644
--- a/tpl/macro.twig
+++ b/tpl/macro.twig
@@ -350,7 +350,7 @@ Script_{{o.name|norm_name}}.Method_{{m.name}}.ReturnValue(frm, stack
     new FuncArgSymbol("{{arg.name}}", 
 
       {%-if has_token(arg, 'bhl_coroutine') -%}
-      {{('coro ' ~ (arg.type|bhl_type))|bhl_type_ref}}, 
+      {{arg.type|bhl_type_ref|replace({'false,':'true,'})}}, 
       {%-else-%}
       {{arg.type|bhl_type_ref}}, 
       {%-endif-%}
@@ -594,7 +594,7 @@ Script_{{o.name|norm_name}}.Method_{{m.name}}.ReturnValue(frm, stack
     {{scope}}.{{o.name|ns_prefix}}Define(cl);
 
     {% if has_token(o, 'POD') and not has_token(o, 'bhl_custom_rw')  %}
-      {{Warn("bhl POD boxing '" ~ o.name ~ "'")}}
+      {{Warn("POD boxing '" ~ o.name ~ "'")}}
     {% endif %}
 
     {% for f in o.getfields %}