# Help to create a Bid system

**URL:** <https://forum.bubble.io/t/help-to-create-a-bid-system/77373>\
**Category:** Need help\
**Created:** [January 27, 2020, 6:17pm UTC](https://forum.bubble.io/t/help-to-create-a-bid-system/77373 "2020-01-27T18:17:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![comebackevents](https://avatars.discourse-cdn.com/v4/letter/c/e274bd/32.png) [@comebackevents](https://forum.bubble.io/u/comebackevents)\
**Post date:** [January 27, 2020, 6:17pm UTC](https://forum.bubble.io/t/help-to-create-a-bid-system/77373/1 "2020-01-27T18:17:58Z")

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Hello,

I’m trying to create a bid system in my app.

In my database, I have a Data Type “Offers” with a “Created by” (User) and an “Applicant” (List of Users) fields.

How can I put in my database a Bid (number/currency) linked to an individual “Applicant” and to an unique “Offers” data type ?

Thank you very much for your help,

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**Author:** ![klaas.vanhoeck1](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/klaas.vanhoeck1/32/47671_2.png) [@klaas.vanhoeck1](https://forum.bubble.io/u/klaas.vanhoeck1)\
**Post date:** [January 27, 2020, 6:30pm UTC](https://forum.bubble.io/t/help-to-create-a-bid-system/77373/2 "2020-01-27T18:30:28Z")

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Create a data type Bid with the fields Applicant, number and Currency. Gives you also the possibility to choose between currencies. Link every Bid with the right offer.

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**Author:** ![whitetigerwolfthe1st](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/whitetigerwolfthe1st/32/30439_2.png) [@whitetigerwolfthe1st](https://forum.bubble.io/u/whitetigerwolfthe1st)\
**Post date:** [January 27, 2020, 7:05pm UTC](https://forum.bubble.io/t/help-to-create-a-bid-system/77373/3 "2020-01-27T19:05:31Z")

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To add on to what @klaas.vanhoeck1 said. You could also create an input field called “Place Bid” and set it to only allow a higher amount than the current standing bid, which would all be stored in the database.

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**Author:** ![system](https://us1.discourse-cdn.com/bubble/original/3X/2/8/2847faa74692c2ffa5d939d3dc3724cdd060d247.png) [@system](https://forum.bubble.io/u/system)\
**Post date:** [April 6, 2020, 6:18pm UTC](https://forum.bubble.io/t/help-to-create-a-bid-system/77373/4 "2020-04-06T18:18:01Z")

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