# Linear Scale: parameter "Min Value" higher than "Max Value"

**URL:** <https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035>\
**Category:** Ignition\
**Tags:** designer, ignition81, vision\
**Created:** [February 28, 2025, 8:56am UTC](https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035 "2025-02-28T08:56:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lucaci.ed](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lucaci.ed/32/63789_2.png) [@lucaci.ed](https://forum.inductiveautomation.com/u/lucaci.ed)\
**Post date:** [February 28, 2025, 8:56am UTC](https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035/1 "2025-02-28T08:56:13Z")

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Hi everyone,  
I have some sensors on a plant and they are scaled like that:

- Min = 0
- Max = -30

But i looks like Ignition designer doesn't supports to have "Min Value" higher than "Max Value":

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/c/6caf72e4dc2082788ada5eedb3fbedd705319a5e.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/d/8d315d52740e9e280f29b27d00c7e7a553116a6b.png)

Am I doing something wrong? Is there a workaround?

Thanks

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [February 28, 2025, 9:13am UTC](https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035/2 "2025-02-28T09:13:42Z")

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Err, min is _always_ going to be less than the max. Set your min to -30 and Max to 0.  
It's a range from -30 to 0, not 0 to -30

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**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\
**Post date:** [March 1, 2025, 10:14am UTC](https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035/3 "2025-03-01T10:14:43Z")

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... and enable Appearance | Reverse Range to invert it.

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<div class="post-metadata">

**Author:** ![lucaci.ed](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lucaci.ed/32/63789_2.png) [@lucaci.ed](https://forum.inductiveautomation.com/u/lucaci.ed)\
**Post date:** [March 7, 2025, 9:19am UTC](https://forum.inductiveautomation.com/t/linear-scale-parameter-min-value-higher-than-max-value/103035/4 "2025-03-07T09:19:51Z")

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Thanks for your answers, both of them are really useful! 🙂