diff --git a/unity/native/papi-lua/source/PesapiLuaImpl.cpp b/unity/native/papi-lua/source/PesapiLuaImpl.cpp
index a1e9e6632f..79eacd3adf 100644
--- a/unity/native/papi-lua/source/PesapiLuaImpl.cpp
+++ b/unity/native/papi-lua/source/PesapiLuaImpl.cpp
@@ -313,35 +313,43 @@ int pesapi_is_int32(pesapi_env env, pesapi_value pvalue)
 {
     lua_State* L = luaStateFromPesapiEnv(env);
     int idx = luaValueFromPesapiValue(pvalue);
-    return lua_type(L, idx) == LUA_TNUMBER;
+    if (!lua_isinteger(L, idx)) {
+        return 0;
+    }
+    const lua_Integer value = lua_tointeger(L, idx);
+    return value >= INT32_MIN && value <= INT32_MAX;
 }
 
 int pesapi_is_uint32(pesapi_env env, pesapi_value pvalue)
 {
     lua_State* L = luaStateFromPesapiEnv(env);
     int idx = luaValueFromPesapiValue(pvalue);
-    return lua_type(L, idx) == LUA_TNUMBER;
+    if (!lua_isinteger(L, idx)) {
+        return 0;
+    }
+    const lua_Integer value = lua_tointeger(L, idx);
+    return value >= 0 && static_cast<uint64_t>(value) <= UINT32_MAX;
 }
 
 int pesapi_is_int64(pesapi_env env, pesapi_value pvalue)
 {
     lua_State* L = luaStateFromPesapiEnv(env);
     int idx = luaValueFromPesapiValue(pvalue);
-    return lua_type(L, idx) == LUA_TNUMBER;
+    return lua_isinteger(L, idx);
 }
 
 int pesapi_is_uint64(pesapi_env env, pesapi_value pvalue)
 {
     lua_State* L = luaStateFromPesapiEnv(env);
     int idx = luaValueFromPesapiValue(pvalue);
-    return lua_type(L, idx) == LUA_TNUMBER;
+    return lua_isinteger(L, idx) && lua_tointeger(L, idx) >= 0;
 }
 
 int pesapi_is_double(pesapi_env env, pesapi_value pvalue)
 {
     lua_State* L = luaStateFromPesapiEnv(env);
     int idx = luaValueFromPesapiValue(pvalue);
-    return lua_type(L, idx) == LUA_TNUMBER;
+    return lua_isnumber(L, idx) && !lua_isinteger(L, idx);
 }
 
 int pesapi_is_string(pesapi_env env, pesapi_value pvalue)
diff --git a/unity/test/Src/Cases/Lua/CrossLang/CrossLangTest.cs b/unity/test/Src/Cases/Lua/CrossLang/CrossLangTest.cs
index be62e38230..c09164d91e 100644
--- a/unity/test/Src/Cases/Lua/CrossLang/CrossLangTest.cs
+++ b/unity/test/Src/Cases/Lua/CrossLang/CrossLangTest.cs
@@ -1,4 +1,4 @@
-using NUnit.Framework;
+using NUnit.Framework;
 using System;
 using System.Runtime.InteropServices;
 using System.Security.Cryptography;
@@ -208,7 +208,7 @@ public void NativeStructInstanceLuaTest()
                 local testHelper = TestHelper.GetInstance()
 
                 local outRef = {}
-                local oNativeStruct = CS.Puerts.UnitTest.TestStruct(1)
+                local oNativeStruct = CS.Puerts.UnitTest.TestStruct(1.0)
                 outRef[1] = oNativeStruct
 
                 local rNativeStruct = testHelper:NativeStructTestPipeLine(oNativeStruct, outRef, function(obj)
@@ -219,10 +219,10 @@ public void NativeStructInstanceLuaTest()
                 assertAndPrint('LuaGetNativeStructOutArgFromCS', outRef[1].value, oNativeStruct.value)
                 assertAndPrint('LuaGetNativeStructReturnFromCS', rNativeStruct.value, oNativeStruct.value)
 
-                testHelper.nativeStructTestField = CS.Puerts.UnitTest.TestStruct(765)
-                testHelper.nativeStructTestProp = CS.Puerts.UnitTest.TestStruct(765)
-                TestHelper.nativeStructTestFieldStatic = CS.Puerts.UnitTest.TestStruct(765)
-                TestHelper.nativeStructTestPropStatic = CS.Puerts.UnitTest.TestStruct(765)
+                testHelper.nativeStructTestField = CS.Puerts.UnitTest.TestStruct(765.0)
+                testHelper.nativeStructTestProp = CS.Puerts.UnitTest.TestStruct(765.0)
+                TestHelper.nativeStructTestFieldStatic = CS.Puerts.UnitTest.TestStruct(765.0)
+                TestHelper.nativeStructTestPropStatic = CS.Puerts.UnitTest.TestStruct(765.0)
                 testHelper:NativeStructTestCheckMemberValue()
             ");
             luaEnv.Dispose();