diff --git a/build_version.py b/build_version.py
index 480a2d3..f4b4fe2 100644
--- a/build_version.py
+++ b/build_version.py
@@ -1,3 +1,3 @@
-version = "v0.1.3"
+version = "v0.1.4-dev"
 
 print("BUILD_VERSION=" + version)
diff --git a/demo/addons/gd-eos/gdeos.gdextension b/demo/addons/gd-eos/gdeos.gdextension
index a7d9ab3..c4712b5 100644
--- a/demo/addons/gd-eos/gdeos.gdextension
+++ b/demo/addons/gd-eos/gdeos.gdextension
@@ -1,6 +1,6 @@
 [infomation]
 name = "GD-EOS"
-version = "v0.1.3-dev"
+version = "v0.0.0"
 decription = "A Epic Online Services plugin for Godot"
 author = "忘忧の (Daylily Zeleen)"
 email = "daylily-zeleen@foxmail.com"
diff --git a/gd_eos/eos_code_generator.py b/gd_eos/eos_code_generator.py
index b1e2581..9389e35 100644
--- a/gd_eos/eos_code_generator.py
+++ b/gd_eos/eos_code_generator.py
@@ -2004,7 +2004,7 @@ def __expend_input_struct(
         elif _is_str_type(field_type, field):
             r_declare_args.append(f"const String &p_{snake_field}")
             r_prepare_lines.append(f"\tCharString utf8_{snake_field} = p_{snake_field}.utf8();")
-            r_prepare_lines.append(f"\t{options_field} = to_eos_type<const char *, decltype({options_field})>(utf8_{snake_field});")
+            r_prepare_lines.append(f"\t{options_field} = to_eos_type<const CharString &, decltype({options_field})>(utf8_{snake_field});")
         elif _is_str_arr_type(field_type, field):
             r_declare_args.append(f"const PackedStringArray &p_{snake_field}")
             option_count_field = f"{arg_name}.{_find_count_field(field, fields.keys())}"
diff --git a/gd_eos/include/core/utils.h b/gd_eos/include/core/utils.h
index 337082e..821e56d 100644
--- a/gd_eos/include/core/utils.h
+++ b/gd_eos/include/core/utils.h
@@ -253,7 +253,10 @@ template <>
 CharString to_godot_type(const cstr_t p_from) { return { p_from }; }
 template <>
 cstr_t to_eos_type<const CharString &, cstr_t>(const CharString &p_from) {
-    return p_from.size() == 1 ? nullptr : (char *)p_from.ptr();
+    if (p_from.size() == 0 || p_from.get(0) == 0) {
+        return nullptr;
+    }
+    return (char *)p_from.ptr();
 }
 template <>
 cstr_t to_eos_type<CharString, cstr_t>(CharString p_from) {