diff --git a/LightJSonBuilder.cpp b/LightJSonBuilder.cpp
index 53c732f..d7d6251 100644
--- a/LightJSonBuilder.cpp
+++ b/LightJSonBuilder.cpp
@@ -390,10 +390,10 @@ BOOL CLightJSonBuilder::AddObjectLongLong(_In_z_ LPCSTR szNameA, _In_ LONGLONG n
     return FALSE;
   if (EscapeString(cStrJsonA, szNameA, StrLenA(szNameA), TRUE) == FALSE)
     return FALSE;
-  return cStrJsonA.AppendFormat("\": \"%I64d\"", nValue);
+  return cStrJsonA.AppendFormat("\": %I64d", nValue);
 }
 
-BOOL CLightJSonBuilder::AddObjectULongLong(_In_z_ LPCSTR szNameA, _In_ ULONGLONG nValue, _In_opt_ BOOL bAsHexa)
+BOOL CLightJSonBuilder::AddObjectULongLong(_In_z_ LPCSTR szNameA, _In_ ULONGLONG nValue)
 {
   MX_ASSERT(szNameA != NULL);
   MX_ASSERT(*szNameA != 0);
@@ -416,7 +416,7 @@ BOOL CLightJSonBuilder::AddObjectULongLong(_In_z_ LPCSTR szNameA, _In_ ULONGLONG
     return FALSE;
   if (EscapeString(cStrJsonA, szNameA, StrLenA(szNameA), TRUE) == FALSE)
     return FALSE;
-  return cStrJsonA.AppendFormat(((bAsHexa == FALSE) ? "\": \"%I64u\"" : "\": \"0x%016I64X\""), nValue);
+  return cStrJsonA.AppendFormat("\": %I64u", nValue);
 }
 
 BOOL CLightJSonBuilder::AddObjectObject(_In_z_ LPCSTR szNameA, _In_ CLightJSonBuilder &cSrc)
@@ -622,10 +622,10 @@ BOOL CLightJSonBuilder::AddArrayLongLong(_In_ LONGLONG nValue)
   }
 
   //insert text
-  return cStrJsonA.AppendFormat("\"%I64d\"", nValue);
+  return cStrJsonA.AppendFormat("%I64d", nValue);
 }
 
-BOOL CLightJSonBuilder::AddArrayULongLong(_In_ ULONGLONG nValue, _In_opt_ BOOL bAsHexa)
+BOOL CLightJSonBuilder::AddArrayULongLong(_In_ ULONGLONG nValue)
 {
   MX_ASSERT(aNestedTypes.GetCount() > 0);
   MX_ASSERT(aNestedTypes.GetElementAt(aNestedTypes.GetCount() - 1) == _IS_ARRAY);
@@ -642,7 +642,7 @@ BOOL CLightJSonBuilder::AddArrayULongLong(_In_ ULONGLONG nValue, _In_opt_ BOOL b
   }
 
   //insert text
-  return cStrJsonA.AppendFormat((bAsHexa == FALSE) ? "\"%I64u\"" : "\"0x%016I64X\"", nValue);
+  return cStrJsonA.AppendFormat("%I64u", nValue);
 }
 
 BOOL CLightJSonBuilder::AddArrayObject(_In_ CLightJSonBuilder &cSrc)
diff --git a/LightJSonBuilder.h b/LightJSonBuilder.h
index 6dbba3c..ae24b79 100644
--- a/LightJSonBuilder.h
+++ b/LightJSonBuilder.h
@@ -51,10 +51,10 @@ class CLightJSonBuilder : public CBaseMemObj, public CNonCopyableObj
   BOOL AddObjectString(_In_z_ LPCSTR szNameA, _In_ PUNICODE_STRING Value);
   BOOL AddObjectLong(_In_z_ LPCSTR szNameA, _In_ LONG nValue);
   BOOL AddObjectULong(_In_z_ LPCSTR szNameA, _In_ ULONG nValue, _In_opt_ BOOL bAsHexa = FALSE);
-  //IMPORTANT: Stored as strings because ECMA-262 Sec 8.5 states max number is 9007199254740990
+  //IMPORTANT: ECMA-262 Sec 8.5 states max number is 9007199254740990 so, if larger, it is recommended to store it as string
+  //           to maximize compatibility, mainly, with javascript.
   BOOL AddObjectLongLong(_In_z_ LPCSTR szNameA, _In_ LONGLONG nValue);
-  //IMPORTANT: Stored as strings because ECMA-262 Sec 8.5 states max number is 9007199254740990
-  BOOL AddObjectULongLong(_In_z_ LPCSTR szNameA, _In_ ULONGLONG nValue, _In_opt_ BOOL bAsHexa = FALSE);
+  BOOL AddObjectULongLong(_In_z_ LPCSTR szNameA, _In_ ULONGLONG nValue);
   BOOL AddObjectObject(_In_z_ LPCSTR szNameA, _In_ CLightJSonBuilder &cSrc);
 
   BOOL AddArrayBoolean(_In_ BOOL bValue);
@@ -64,10 +64,10 @@ class CLightJSonBuilder : public CBaseMemObj, public CNonCopyableObj
   BOOL AddArrayFormattedString(_Printf_format_string_ LPCWSTR szFormatW, ...);
   BOOL AddArrayLong(_In_ LONG nValue);
   BOOL AddArrayULong(_In_ ULONG nValue, _In_opt_ BOOL bAsHexa = FALSE);
-  //IMPORTANT: Stored as strings because ECMA-262 Sec 8.5 states max number is 9007199254740990
+  //IMPORTANT: ECMA-262 Sec 8.5 states max number is 9007199254740990 so, if larger, it is recommended to store it as string
+  //           to maximize compatibility, mainly, with javascript.
   BOOL AddArrayLongLong(_In_ LONGLONG nValue);
-  //IMPORTANT: Stored as strings because ECMA-262 Sec 8.5 states max number is 9007199254740990
-  BOOL AddArrayULongLong(_In_ ULONGLONG nValue, _In_opt_ BOOL bAsHexa = FALSE);
+  BOOL AddArrayULongLong(_In_ ULONGLONG nValue);
   BOOL AddArrayObject(_In_ CLightJSonBuilder &cSrc);
 
   BOOL AddRaw(_In_ LPCSTR szStrA, _In_opt_ SIZE_T nStrLen = (SIZE_T)-1);