diff --git a/package-lock.json b/package-lock.json
index df4b145..bd161d0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "auth-header": "^1.0.0",
         "commander": "^10.0.0",
         "cors": "^2.8.5",
-        "dblang": "https://jusax.de/git/attachments/1317588b-b3f3-4b95-bdcc-34292a023298",
+        "dblang": "https://jusax.de/git/attachments/377d0a32-3eca-4a8f-9c3a-f8a045a9c5b1",
         "express": "^4.18.2",
         "juml": "https://jusax.de/git/attachments/208913c5-2851-4b86-a53d-ca99fed168cc",
         "nman": "https://jusax.de/git/attachments/5333948b-fe6b-45d2-9230-ca388f6a89bc",
@@ -1108,8 +1108,8 @@
     },
     "node_modules/dblang": {
       "version": "0.9.3",
-      "resolved": "https://jusax.de/git/attachments/1317588b-b3f3-4b95-bdcc-34292a023298",
-      "integrity": "sha512-l2LKpxM79S2UjVWS1W9flLt6uZcVsG2qrc6JwqoFv0rgxMOBzoJnnWaHSD5UJKydgXjMycZIvXpGzkuX6vNfwA==",
+      "resolved": "https://jusax.de/git/attachments/377d0a32-3eca-4a8f-9c3a-f8a045a9c5b1",
+      "integrity": "sha512-Co3RZ2Dfk2Atm2Oyr7rtHJDeiMZ8NwfrvTBwfhP9wVkXQuN1WrMMQ5W+/Ho2g6c6BWbUnsqADKTaCcJZrYBbjQ==",
       "license": "UNLICENSED",
       "dependencies": {
         "gitea-release": "git+https://jusax.de/git/jusax23/gitea-release.git",
diff --git a/package.json b/package.json
index 16ce74c..fd38f03 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "auth-header": "^1.0.0",
     "commander": "^10.0.0",
     "cors": "^2.8.5",
-    "dblang": "https://jusax.de/git/attachments/1317588b-b3f3-4b95-bdcc-34292a023298",
+    "dblang": "https://jusax.de/git/attachments/377d0a32-3eca-4a8f-9c3a-f8a045a9c5b1",
     "express": "^4.18.2",
     "juml": "https://jusax.de/git/attachments/208913c5-2851-4b86-a53d-ca99fed168cc",
     "nman": "https://jusax.de/git/attachments/5333948b-fe6b-45d2-9230-ca388f6a89bc",
diff --git a/src/api/acts/roomContent.ts b/src/api/acts/roomContent.ts
index 474bd28..d171f23 100644
--- a/src/api/acts/roomContent.ts
+++ b/src/api/acts/roomContent.ts
@@ -1,4 +1,4 @@
-import { and, eq, insert, remove, select, update } from "dblang";
+import { and, coalesce, eq, insert, max, plus, remove, select, update } from "dblang";
 import { checkSelfTag } from "../../server/outbagURL.js";
 import { Act, Client, STATE } from "../user.js";
 import { db, listCategories, listProducts } from "../../sys/db.js";
@@ -49,7 +49,6 @@ export const addCategory: Act = {
         server: "string",
         title: "string-256",
         color: "string-32",
-        weight: "number"
     },
     func: async (client: Client, data: any, aws: (code: string, data: any) => void) => {
         if (!checkSelfTag(data.server)) {
@@ -68,11 +67,15 @@ export const addCategory: Act = {
             listCategories.title,
             listCategories.weight,
             listCategories.color
-        ).add(
-            roomID,
-            data.title,
-            data.weight,
-            data.color
+        ).setSelect(
+            select([
+                roomID,
+                data.title,
+                plus(coalesce(max(listCategories.weight), 0), 1),
+                data.color
+            ], listCategories)
+            .where(eq(listCategories.roomID, roomID))
+            .limit(1)
         ).query(db);
         if (req.affectedRows > 0) aws("ok", {
             catID: req.insertId