diff --git a/src/utils/mqttHelper.cpp b/src/utils/mqttHelper.cpp
new file mode 100644
index 00000000..f92abd7d
--- /dev/null
+++ b/src/utils/mqttHelper.cpp
@@ -0,0 +1,101 @@
+#include "mqttHelper.h"
+
+namespace mqttHelper {
+
+    /** checkBoolProperty
+     * TODO: modify header
+     * @param tmpTopic
+     * @param subTopic
+     * @param payload
+     * @param len
+     * @param cfg
+     * @param log
+     * @returns bool
+     */
+
+    bool checkCharProperty(const char *tmpTopic, const char *subTopic, const uint8_t *payload, size_t len, char *cfg, int cfgSize, DynamicJsonHandler *log) {
+        // Check if tmpTopic starts with subTopic
+        if (strncmp(tmpTopic, subTopic, strlen(subTopic)) == 0) {
+            // Convert payload to a String instance
+            String sPayload = String((const char*)payload).substring(0, len);
+
+            // Copy the String into cfg and ensure cfg is null-terminated
+            strncpy(cfg, sPayload.c_str(), cfgSize - 1);
+            cfg[cfgSize - 1] = '\0';  // Ensure cfg is null-terminated
+
+            // Add the property to the log
+            log->addProperty("v", cfg);
+
+            return true;  // Successfully processed the property
+        }
+
+        return false;  // Did not process the property
+    }
+
+    bool checkBoolProperty(const char *tmpTopic, const char *subTopic, const uint8_t *payload, size_t len, bool *cfg, DynamicJsonHandler *log) {
+        if (strncmp(tmpTopic, subTopic, strlen(subTopic)) == 0) {
+            String sPayload = String((const char*)payload).substring(0, len);
+
+            if (sPayload == "1" || sPayload == "true") {
+                *cfg = true;
+                log->addProperty("v", *cfg);
+            } else if (sPayload == "0" || sPayload == "false") {
+                *cfg = false;
+                log->addProperty("v", *cfg);
+            } else {
+                DBGPRINTLN(F("Payload is not a valid boolean value"));
+                log->addProperty("v", "payload error");
+            }
+            return true;
+        }
+        return false;
+    }
+
+}
+// --- END Namespace ---
+
+    /** checkProperty
+     *
+     */
+/*
+    // final function what "all" combines other function into one
+    template <typename T>
+    bool checkProperty(const char *tmpTopic, const char *subTopic, const uint8_t *payload, size_t len, T *cfg, DynamicJsonHandler *log) {
+        if (strncmp(tmpTopic, subTopic, strlen(subTopic)) == 0) {
+            String sPayload = String((const char*)payload).substring(0, len);
+
+            // Überprüfung und Zuweisung je nach Typ T
+            if constexpr (std::is_integral_v<T>) {
+                T value;
+                sscanf(sPayload.c_str(), "%lld", &value);  // Beachte "%lld" für int64_t und uint64_t
+                if (value <= std::numeric_limits<T>::max() && value >= std::numeric_limits<T>::min()) {
+                    *cfg = value;
+                } else {
+                    log->addProperty("v", F("Fehler: Der Wert passt nicht in den Ziel-Typ T"));
+                    return false;
+                }
+            } else if constexpr (std::is_same_v<T, bool>) {
+                *cfg = (sPayload == "1" || sPayload == "true");
+                if (*cfg) {
+                    log->addProperty("v", "true");
+                } else {
+                    log->addProperty("v", "false");
+                }
+            } else if constexpr (std::is_same_v<T, char*> || std::is_same_v<T, const char*>) {
+                strncpy(*cfg, sPayload.c_str(), cfgSize - 1);
+                (*cfg)[cfgSize - 1] = '\0';
+            } else {
+                // Handle andere Datentypen
+                return false;
+            }
+
+            // Füge die Eigenschaft zum Log hinzu
+            log->addProperty("v", sPayload.c_str());
+
+            return true;
+        }
+
+        return false;
+    }
+*/
+