# Chart - Plot Constant Line Based on Passed Parameter **URL:** \ **Category:** Ignition\ **Created:** [July 7, 2011, 4:22pm UTC](https://forum.inductiveautomation.com/t/chart-plot-constant-line-based-on-passed-parameter/3068 "2011-07-07T16:22:06Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![jkramer](https://avatars.discourse-cdn.com/v4/letter/j/35a633/32.png) [@jkramer](https://forum.inductiveautomation.com/u/jkramer)\ **Post date:** [July 7, 2011, 4:22pm UTC](https://forum.inductiveautomation.com/t/chart-plot-constant-line-based-on-passed-parameter/3068/1 "2011-07-07T16:22:06Z")
Hello, I’d like to be able to use a Dynamic Property (passed from another screen) as a constant value to be plotted on an Easy Chart. I don’t see that there is any way to do that. Am I missing something, or is there another way that makes more sense? Thanks for any help you can offer. ---
**Author:** ![jkramer](https://avatars.discourse-cdn.com/v4/letter/j/35a633/32.png) [@jkramer](https://forum.inductiveautomation.com/u/jkramer)\ **Post date:** [July 7, 2011, 5:24pm UTC](https://forum.inductiveautomation.com/t/chart-plot-constant-line-based-on-passed-parameter/3068/2 "2011-07-07T17:24:44Z")
I figured out a solution. I bound the Calculated Pens to a dataset and was able to integrate the passed parameter that way. ---
**Author:** ![Carl.Gould](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/carl.gould/32/7262_2.png) [@Carl.Gould](https://forum.inductiveautomation.com/u/Carl.Gould)\ **Post date:** [July 12, 2011, 5:05am UTC](https://forum.inductiveautomation.com/t/chart-plot-constant-line-based-on-passed-parameter/3068/3 "2011-07-12T05:05:55Z")
For anyone else interested, to do this you’d make a constant calculated pen, and then use the cell-update binding on the Easy Chart’s expert-level tagPens dataset property to bind the passed parameter into the pen dataset.