diff --git a/src/api/acts/roomContent.ts b/src/api/acts/roomContent.ts
index e1a8ab6..63bd63d 100644
--- a/src/api/acts/roomContent.ts
+++ b/src/api/acts/roomContent.ts
@@ -245,7 +245,8 @@ export const addProduct: Act = {
         listCatID: "number",
         defUnit: "number",
         defValue: "string-256",
-        ean: "string-64"
+        ean: "string-64",
+        parent: "number" //-1 = no parent
     },
     func: async (client: Client, data: any, aws: (code: string, data: any) => void) => {
         if (!checkSelfTag(data.server)) {
@@ -260,6 +261,7 @@ export const addProduct: Act = {
             return;
         }
         if (!isCategoryInRoom(roomID, data.listCatID)) return void aws("error", "existence");
+        if (data.parent > -1 && !isProductInRoom(roomID, data.parent)) return void aws("error", "existence");
         let req = await insert(
             listProducts.roomID,
             listProducts.title,
@@ -268,6 +270,7 @@ export const addProduct: Act = {
             listProducts.defUnit,
             listProducts.defValue,
             listProducts.ean,
+            listProducts.parent,
         ).add(
             roomID,
             data.title,
@@ -275,7 +278,8 @@ export const addProduct: Act = {
             data.listCatID,
             data.defUnit,
             data.defValue,
-            data.ean
+            data.ean,
+            data.parent > -1 ? data.parent : null,
         ).query(db);
         if (req.affectedRows > 0) aws("ok", {
             listProdID: req.insertId
@@ -296,7 +300,8 @@ export const changeProduct: Act = {
         listCatID: "number",
         defUnit: "number",
         defValue: "string-256",
-        ean: "string-64"
+        ean: "string-64",
+        parent: "number" //-1 = no parent
     },
     func: async (client: Client, data: any, aws: (code: string, data: any) => void) => {
         if (!checkSelfTag(data.server)) {
@@ -312,6 +317,8 @@ export const changeProduct: Act = {
         }
         if (!isCategoryInRoom(roomID, data.listCatID)) return void aws("error", "existence");
         if (!isProductInRoom(roomID, data.listProdID)) return void aws("error", "existence");
+        if (data.parent > -1 && !isProductInRoom(roomID, data.parent)) return void aws("error", "existence");
+
         let req = await update(listProducts)
             .set(listProducts.title, data.title)
             .set(listProducts.description, data.description)
@@ -319,6 +326,7 @@ export const changeProduct: Act = {
             .set(listProducts.defUnit, data.defUnit)
             .set(listProducts.defValue, data.defValue)
             .set(listProducts.ean, data.ean)
+            .set(listProducts.parent, data.parent > -1 ? data.parent : null)
             .where(eq(listProducts.listProdID, data.listProdID))
             .query(db);
         if (req.affectedRows > 0) aws("ok", "");