Refactor SQL ID checks in MonitoringServer class to improve validation logic and ensure proper database connection handling

Monitoring Server Influx V1/module.php

@@ -429,7 +429,7 @@ class MonitoringServer extends IPSModule {
         $tdOld = $this->ReadAttributeString("AtAlarmtable");
         $td = $tdOld;
         
-        if ($idSql > 1 && $idSql != 12345){
+        if ($idSql > 0 && IPS_InstanceExists($idSql)){
                 MySQL_Open($idSql);
 
 
@@ -440,6 +440,7 @@ class MonitoringServer extends IPSModule {
                 // Fallback, falls Modul-Funktion nicht verfügbar ist
                     $esc = fn(string $s) => addslashes($s);
                 }
+
         }
         $time = date("Y-m-d H:i:s");
 
@@ -538,7 +539,7 @@ class MonitoringServer extends IPSModule {
                                 )",
                                 $esc($smname), $esc($phonenumber)
                             );
-                            if ($idSql > 1 && $idSql != 12345){
+                            if ($idSql > 0 && IPS_InstanceExists($idSql)){
                                
                             
                             // === Ausführen ===
@@ -615,7 +616,7 @@ class MonitoringServer extends IPSModule {
                     (int)$mail, $esc($email_address), (int)$mailed,
                     (int)$push
                 );
-                if ($idSql > 1 && $idSql != 12345){
+            if ($idSql > 0 && IPS_InstanceExists($idSql)){
                 // === Ausführen ===
                 $ok = MySQL_ExecuteSimple($idSql, $sql);
                 if (!$ok) {