diff --git a/lib/api/booking_api.dart b/lib/api/booking_api.dart
index 24defae..3e75221 100644
--- a/lib/api/booking_api.dart
+++ b/lib/api/booking_api.dart
@@ -41,12 +41,18 @@ class BookingApi {
       if (code != null && code.isEmpty) code = null;
 
       final starts = <String?>[
-        row['come1'] as String?, row['come2'] as String?,
-        row['come3'] as String?, row['come4'] as String?, row['come5'] as String?,
+        row['come1'] as String?,
+        row['come2'] as String?,
+        row['come3'] as String?,
+        row['come4'] as String?,
+        row['come5'] as String?,
       ];
       final ends = <String?>[
-        row['leave1'] as String?, row['leave2'] as String?,
-        row['leave3'] as String?, row['leave4'] as String?, row['leave5'] as String?,
+        row['leave1'] as String?,
+        row['leave2'] as String?,
+        row['leave3'] as String?,
+        row['leave4'] as String?,
+        row['leave5'] as String?,
       ];
       final intervals = <WorkInterval>[];
       for (int i = 0; i < 5; i++) {
@@ -78,7 +84,8 @@ class BookingApi {
     );
     final res = await client.get(uri);
     if (res.statusCode != 200) {
-      throw Exception('monthlybooking/getList failed: ${res.statusCode} ${res.body}');
+      throw Exception(
+          'monthlybooking/getList failed: ${res.statusCode} ${res.body}');
     }
     final map = jsonDecode(res.body) as Map<String, dynamic>;
     if (map['error'] == true) {
@@ -95,10 +102,10 @@ class BookingApi {
     final dateStr = '$y-$m-$d';
 
     final starts = List<String?>.filled(5, null);
-    final ends   = List<String?>.filled(5, null);
+    final ends = List<String?>.filled(5, null);
     for (int i = 0; i < day.intervals.length && i < 5; i++) {
       starts[i] = fmtTimeOfDay(day.intervals[i].start);
-      ends[i]   = fmtTimeOfDay(day.intervals[i].end);
+      ends[i] = fmtTimeOfDay(day.intervals[i].end);
     }
 
     final lockCodes = {'G', 'U', 'SU', 'K'};
@@ -165,7 +172,8 @@ class BookingApi {
     );
 
     if (res.statusCode != 200) {
-      throw Exception('monthlybooking/saveStart failed: ${res.statusCode} ${res.body}');
+      throw Exception(
+          'monthlybooking/saveStart failed: ${res.statusCode} ${res.body}');
     }
     final map = jsonDecode(res.body) as Map<String, dynamic>;
     if (map['error'] == true) {
@@ -191,7 +199,8 @@ class BookingApi {
       }),
     );
     if (res.statusCode != 200) {
-      throw Exception('monthlybooking/hasDoc failed: ${res.statusCode} ${res.body}');
+      throw Exception(
+          'monthlybooking/hasDoc failed: ${res.statusCode} ${res.body}');
     }
     final map = jsonDecode(res.body) as Map<String, dynamic>;
     if (map['error'] == true) {
@@ -214,7 +223,8 @@ class BookingApi {
     }
     // Versuch, JSON-Fehler zu lesen
     try {
-      final map = jsonDecode(utf8.decode(res.bodyBytes)) as Map<String, dynamic>;
+      final map =
+          jsonDecode(utf8.decode(res.bodyBytes)) as Map<String, dynamic>;
       final msg = map['errmsg'] ?? res.reasonPhrase ?? 'Unknown';
       throw Exception('getDoc error: $msg');
     } catch (_) {
@@ -229,12 +239,16 @@ class BookingApi {
     String filename = 'document.pdf',
   }) async {
     final ymd = date.length == 7 ? '$date-01' : date;
-    final uri = Uri.parse(
-      'https://api.windesign.at/workinghours.php?module=monthlybooking&function=saveDoc',
-    );
+
+    // Wichtig: POST auf Basis-URL (ohne module/function in der Query!)
+    final uri = Uri.parse('https://api.windesign.at/workinghours.php');
+
     final request = http.MultipartRequest('POST', uri)
+      // Router-Parameter als Felder mitsenden:
+      ..fields['module'] = 'monthlybooking'
+      ..fields['function'] = 'saveDoc' // oder 'replaceDoc', je nach Server
       ..fields['date'] = ymd
-      ..fields['doctype'] = type;
+      ..fields['doctype'] = type; // achte: 'doctype' vs. 'kind' – wie am Server
 
     request.files.add(
       http.MultipartFile.fromBytes(
@@ -247,8 +261,10 @@ class BookingApi {
 
     final streamed = await request.send();
     final res = await http.Response.fromStream(streamed);
+
     if (res.statusCode != 200) {
-      throw Exception('monthlybooking/saveDoc failed: ${res.statusCode} ${res.body}');
+      throw Exception(
+          'monthlybooking/saveDoc failed: ${res.statusCode} ${res.body}');
     }
     final map = jsonDecode(res.body) as Map<String, dynamic>;
     if (map['error'] == true) {
@@ -273,7 +289,8 @@ class BookingApi {
       }),
     );
     if (res.statusCode != 200) {
-      throw Exception('monthlybooking/deleteDoc failed: ${res.statusCode} ${res.body}');
+      throw Exception(
+          'monthlybooking/deleteDoc failed: ${res.statusCode} ${res.body}');
     }
     final map = jsonDecode(res.body) as Map<String, dynamic>;
     if (map['error'] == true) {