diff --git a/extensions/openpower-pels/json_utils.hpp b/extensions/openpower-pels/json_utils.hpp
index 14c2ce4..f3fb767 100644
--- a/extensions/openpower-pels/json_utils.hpp
+++ b/extensions/openpower-pels/json_utils.hpp
@@ -39,7 +39,7 @@
  * @param[in] indentCount - Indent count for the line
  */
 void jsonInsert(std::string& jsonStr, const std::string& fieldName,
-                std::string& fieldValue, uint8_t indentCount);
+                std::string fieldValue, uint8_t indentCount);
 
 /**
  * @brief Inserts key-value array into a JSON string
@@ -51,5 +51,30 @@
  */
 void jsonInsertArray(std::string& jsonStr, const std::string& fieldName,
                      std::vector<std::string>& values, uint8_t indentCount);
+
+/**
+ * @brief Converts an integer to a formatted string
+ * @param[in] format - the format of output string
+ * @param[in] number - the integer to convert
+ * @return std::string - the formatted string
+ */
+template <typename T>
+std::string getNumberString(const char* format, T number)
+{
+    char* value = nullptr;
+    std::string numString;
+
+    static_assert(std::is_integral<T>::value, "Integral required.");
+
+    int len = asprintf(&value, format, number);
+    if (len)
+    {
+        numString = value;
+    }
+    free(value);
+
+    return numString;
+}
+
 } // namespace pels
 } // namespace openpower