diff --git a/src/api/acts/roomContent.ts b/src/api/acts/roomContent.ts
index 674080b..50558a8 100644
--- a/src/api/acts/roomContent.ts
+++ b/src/api/acts/roomContent.ts
@@ -419,7 +419,7 @@ export const addItem: Act = {
         state: "numer",
         title: "string-256",
         description: "string-4096",
-        listCatID: "number",
+        listCatID: "number", //-1 = no parent
         unit: "number",
         value: "string-256",
         listProdID: "number" //-1 = no parent
@@ -474,7 +474,7 @@ export const changeItem: Act = {
         state: "numer",
         title: "string-256",
         description: "string-4096",
-        listCatID: "number",
+        listCatID: "number", //-1 = no parent
         unit: "number",
         value: "string-256",
         listProdID: "number" //-1 = no parent