# Value entering device

**URL:** <https://community.homey.app/t/value-entering-device/73816>\
**Category:** Questions & Help\
**Created:** [December 18, 2022, 10:00pm UTC](https://community.homey.app/t/value-entering-device/73816 "2022-12-18T22:00:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yannik\_Costa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/yannik_costa/32/13853_2.png) [@Yannik\_Costa](https://community.homey.app/u/Yannik_Costa)\
**Post date:** [December 18, 2022, 10:00pm UTC](https://community.homey.app/t/value-entering-device/73816/1 "2022-12-18T22:00:24Z")

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Hi there,

If searched now a lot and haven’t found something, which fits my needs, maybe some one has an idea 🙂

I have a heating system, which i do not yet trigger related to room temperature, does not work for the moment, several other reasons. So what I did is I created a flow and start the heating for a defined time with virtual devices. But the duration is fixed.

What I’m looking for is a virtual device were i can set the “time” and use this time then in the flow.

thanks for your support and br

Yannik

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**Author:** ![RonnyW](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ronnyw/32/10879_2.png) [@RonnyW](https://community.homey.app/u/RonnyW)\
**Post date:** [December 18, 2022, 10:09pm UTC](https://community.homey.app/t/value-entering-device/73816/2 "2022-12-18T22:09:46Z")

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You can use logic variables to set the time. This variable you can use in flows (read and change variable)