# Virtual products (kits) decrease, how to increase? **URL:** \ **Category:** Using my Dolibarr\ **Created:** [January 25, 2019, 2:26pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277 "2019-01-25T14:26:39Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Jochen](https://www.dolibarr.org/forum/letter_avatar_proxy/v4/letter/j/91b2a8/32.png) [@Jochen](https://www.dolibarr.org/forum/u/Jochen)\ **Post date:** [January 25, 2019, 2:26pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/1 "2019-01-25T14:26:39Z")
Hi Dolibarr community. I’m having trouble understanding the Virtual products (Kits) feature. Situation: \* I have a virtual product that consists of two real products. \* The virtual product has the option “Increase/Decrease stock on parent change” \* Dolibarr is configured that when shipping products, the stock decreases and when receiving shipments, the stock increases. When I sell the virtual product, the real products attached to it decrease. When I receive ordered real products, the stock count of the real product increases. But the virtual products stock count does not. When I correct the stock for the virtual product, the real products will also increase… So the question is, how to I automatically, or manually increase the stock of the virtual product? (Or do I need to uncheck the “Increase/Decrease stock on parent change” on the virtual product, and then correct the stock, and then change the “Increase/Decrease stock on parent change” back…) What is the correct flow for this? ---
**Author:** ![jrgonzalezrios](https://www.dolibarr.org/forum/user_avatar/www.dolibarr.org/jrgonzalezrios/32/4133_2.png) [@jrgonzalezrios](https://www.dolibarr.org/forum/u/jrgonzalezrios)\ **Post date:** [February 4, 2020, 10:51pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/2 "2020-02-04T22:51:27Z")
Hi!, I am having the same issue… did you come up with a solution? up-vote this Thanks! ---
**Author:** ![Akkz](https://www.dolibarr.org/forum/user_avatar/www.dolibarr.org/akkz/32/3321_2.png) [@Akkz](https://www.dolibarr.org/forum/u/Akkz)\ **Post date:** [February 6, 2020, 11:51am UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/3 "2020-02-06T11:51:01Z")
Untick ‘increase or decrease’ option use factory module -\> real products quantity will be consumed to make the final product. so real products decrease and the final product increase. ---
**Author:** ![jrgonzalezrios](https://www.dolibarr.org/forum/user_avatar/www.dolibarr.org/jrgonzalezrios/32/4133_2.png) [@jrgonzalezrios](https://www.dolibarr.org/forum/u/jrgonzalezrios)\ **Post date:** [February 10, 2020, 6:30pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/4 "2020-02-10T18:30:07Z")
Thanks for your respond, could you explain where this factory module is? ---
**Author:** ![ksar](https://www.dolibarr.org/forum/user_avatar/www.dolibarr.org/ksar/32/514_2.png) [@ksar](https://www.dolibarr.org/forum/u/ksar)\ **Post date:** [February 10, 2020, 9:01pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/5 "2020-02-10T21:01:10Z")
[https://www.dolistore.com/en/products-services-or-stock/386-Factory--computer-assisted-manufacturing--CAPM-CAMM--for-Dolibarr.html](https://www.dolistore.com/en/products-services-or-stock/386-Factory--computer-assisted-manufacturing--CAPM-CAMM--for-Dolibarr.html) ---
**Author:** ![Akkz](https://www.dolibarr.org/forum/user_avatar/www.dolibarr.org/akkz/32/3321_2.png) [@Akkz](https://www.dolibarr.org/forum/u/Akkz)\ **Post date:** [February 11, 2020, 12:40pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/6 "2020-02-11T12:40:38Z")
> [@Problems understanding virtual product functions.](https://www.dolibarr.org/forum/t/problems-understanding-virtual-product-functions/18074): > > Good day to you all. I am a new user of dolibar currently using version 10.0.3. the problem I have is as folows : I have a product a box of different candy lets call it CANDY ASSORT. It virtual product tab it is made of or contains these products: 1 cardboard candy Box 1 candy caramel 1 candy vanilla 1 candy coffee All are virtual products are set to change stock as parent product changes that is what I need and I understand how it works. the problem: I have 0 stock of CANDY ASSORT , … Hope this helps you ---
**Author:** ![conformist](https://www.dolibarr.org/forum/letter_avatar_proxy/v4/letter/c/5e9695/32.png) [@conformist](https://www.dolibarr.org/forum/u/conformist)\ **Post date:** [June 11, 2020, 12:30pm UTC](https://www.dolibarr.org/forum/t/virtual-products-kits-decrease-how-to-increase/17277/7 "2020-06-11T12:30:04Z")
I don’t think buying a module for the Dolistore is a reasonable answer to this. The detail on the ‘virtual products’ tab of the services is clear about how this should operate. ![image](https://www.dolibarr.org/forum/uploads/dolibarrorg/original/2X/6/611bdc707e0101b75e980540149eb2cec9b533c2.png) Is this actually a bug?