# Lights dim to duration not working (Heat it) **URL:** \ **Category:** Questions & Help\ **Tags:** advancedflow\ **Created:** [October 5, 2025, 6:13pm UTC](https://community.homey.app/t/lights-dim-to-duration-not-working-heat-it/143802 "2025-10-05T18:13:03Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![SmartHouseDumbGuy](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/smarthousedumbguy/32/122377_2.png) [@SmartHouseDumbGuy](https://community.homey.app/u/SmartHouseDumbGuy)\ **Post date:** [October 5, 2025, 6:13pm UTC](https://community.homey.app/t/lights-dim-to-duration-not-working-heat-it/143802/1 "2025-10-05T18:13:03Z")
I’m new to Homey, got some basic time of day and movement/presence based lighting and temperature controls going but now I wanted to make the transitions a little smoother and ran into a problem. I was led to believe I could use “duration” on the “dim to” card to make the dimming take place over a period (like 5 mins). I can make lights dim up and down no problem, but when I add the duration feature I get the following error. Do my Heat It Z-Wave dimmers not support gradual dimming maybe? Any suggestions for alternative methods for gradual dimming would also be greatly appreciated. I understand it’s possible with scripts but I’d rather avoid that if I can.. **This card has failed after 8ms** An error tag has been generated **Error** util is not defined ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/2/02ae348a6a363bee550237501b82ea386a39e8eb.png) ---
**Author:** ![Wim\_Post](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/wim_post/32/56793_2.png) [@Wim\_Post](https://community.homey.app/u/Wim_Post)\ **Post date:** [October 5, 2025, 8:54pm UTC](https://community.homey.app/t/lights-dim-to-duration-not-working-heat-it/143802/2 "2025-10-05T20:54:17Z")
With the. Chronograph-app you can create a transition: ![IMG_1970](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/b/6b254b300c94f0e313d4923b6b52f2d1a0073b7d.jpeg) This gives you a trigger: ![IMG_1971](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/4/64c13448cf026d8907b902144ad7cdd617341537.jpeg) Now you can dim to the transition-value. Each step the transition-value lowers from 1 to 0,5 with 0.5/20 per step. ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [October 6, 2025, 1:12am UTC](https://community.homey.app/t/lights-dim-to-duration-not-working-heat-it/143802/3 "2025-10-06T01:12:45Z")
To help improving stuff: please notify the app developer about your findings. It seems to be a bug / glitch. Contact info usually is present on the app page at the Homey app store.