# Is it possible to acess Maximum/Minimum Value of a Power Chart's pen?

**URL:** <https://forum.inductiveautomation.com/t/is-it-possible-to-acess-maximum-minimum-value-of-a-power-charts-pen/71547>\
**Category:** Ignition\
**Tags:** perspective, scripting\
**Created:** [March 24, 2023, 1:15pm UTC](https://forum.inductiveautomation.com/t/is-it-possible-to-acess-maximum-minimum-value-of-a-power-charts-pen/71547 "2023-03-24T13:15:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Roberto\_Luis](https://avatars.discourse-cdn.com/v4/letter/r/977dab/32.png) [@Roberto\_Luis](https://forum.inductiveautomation.com/u/Roberto_Luis)\
**Post date:** [March 24, 2023, 1:15pm UTC](https://forum.inductiveautomation.com/t/is-it-possible-to-acess-maximum-minimum-value-of-a-power-charts-pen/71547/1 "2023-03-24T13:15:44Z")

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I'm trying to personalize the range auto mode, using it on manual but adding a script to determine a min and max value (based on minimum and maximum values of each pen).

I wanna to do like:  
Minimum range of graph equal to 10% less than the minimum value of the pen  
Maximum range of graph equal to 10% more than the maximum value of the pen