# \[BUG-14752\] Perspective Time Series Chart - Component Error r.props.yScale

**URL:** <https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492>\
**Category:** Ignition Early Access\
**Created:** [August 15, 2019, 8:15pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492 "2019-08-15T20:15:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![vcgasman](https://avatars.discourse-cdn.com/v4/letter/v/ecc23a/32.png) [@vcgasman](https://forum.inductiveautomation.com/u/vcgasman)\
**Post date:** [August 15, 2019, 8:15pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492/1 "2019-08-15T20:15:04Z")

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I am receiving the attached error when I switch my chart to historical mode. It happens 9 out of 10 times I switch to this screen, but does render once in a while. If I put it into realtime mode, I get this message until it polls once, then the chart is there and is fine.  
I don’t see a property called yScale in the property editor.  
Thanks

 ![Capture7](https://us1.discourse-cdn.com/inductiveautomation/original/2X/b/bff911f894f7d3751306556ddf4ed250f72ce914.jpeg)

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<div class="post-metadata">

**Author:** ![vcgasman](https://avatars.discourse-cdn.com/v4/letter/v/ecc23a/32.png) [@vcgasman](https://forum.inductiveautomation.com/u/vcgasman)\
**Post date:** [August 15, 2019, 8:41pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492/2 "2019-08-15T20:41:50Z")

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Follow up-  
I’ve traced it back to the bindings on my axes for min and max. I’m binding the axes.0 min and max to the tags EngLow and EngHigh tags.  
I have three tags, each in their own plot. Here are the axes bindings respectively:  
plots.0.axes.0.min = [default]WW454/A101/LIT\_1A/LEVEL.EngLow  
plots.0.axes.0.max = [default]WW454/A101/LIT\_1A/LEVEL.EngHigh

plots.1.axes.0.min = [default]WW454/A101/LIT\_1B/LEVEL.EngLow  
plots.1.axes.0.max = [default]WW454/A101/LIT\_1B/LEVEL.EngHigh

plots.2.axes.0.min = [default]WW454/A101/LIT\_1/LEVEL.EngLow  
plots.2.axes.0.max = [default]WW454/A101/LIT\_1/LEVEL.EngHigh

All binding tags were selected from the tree view picker, so they are all valid, no misspellings, etc.

Thanks

 ![Capture8](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/cc8c333a059466f12cd4af9a1dd6a71f0c0a0959.jpeg)

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<div class="post-metadata">

**Author:** ![jball](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jball/32/11128_2.png) [@jball](https://forum.inductiveautomation.com/u/jball)\
**Post date:** [August 15, 2019, 11:11pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492/3 "2019-08-15T23:11:32Z")

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Thanks @vcgasman, I will use that technique to replicate so I can fix the bug.

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<div class="post-metadata">

**Author:** ![vcgasman](https://avatars.discourse-cdn.com/v4/letter/v/ecc23a/32.png) [@vcgasman](https://forum.inductiveautomation.com/u/vcgasman)\
**Post date:** [August 16, 2019, 12:10pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492/4 "2019-08-16T12:10:40Z")

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Sounds good- Be sure to open your view/page in the browser. It seems to be ok in designer once it renders once but fails almost every time in the browser.

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**Author:** ![awalker](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/awalker/32/6874_2.png) [@awalker](https://forum.inductiveautomation.com/u/awalker)\
**Post date:** [September 23, 2019, 3:43pm UTC](https://forum.inductiveautomation.com/t/bug-14752-perspective-time-series-chart-component-error-r-props-yscale/27492/5 "2019-09-23T15:43:25Z")

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This issue is fixed in the the latest 8.0.5 nightly build.