# Calendar to Easy Chart(odd behavior)

**URL:** <https://forum.inductiveautomation.com/t/calendar-to-easy-chart-odd-behavior/18405>\
**Category:** Ignition\
**Created:** [June 11, 2018, 7:08pm UTC](https://forum.inductiveautomation.com/t/calendar-to-easy-chart-odd-behavior/18405 "2018-06-11T19:08:33Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![dano38291](https://avatars.discourse-cdn.com/v4/letter/d/9d8465/32.png) [@dano38291](https://forum.inductiveautomation.com/u/dano38291)\
**Post date:** [June 11, 2018, 7:08pm UTC](https://forum.inductiveautomation.com/t/calendar-to-easy-chart-odd-behavior/18405/1 "2018-06-11T19:08:33Z")

</div>

Hello,  
I noticed something odd about a Calendar Control Tied to an Easy Chart. On Calendar I created a Custom Property called NextDay, where I used an Expression Binding and DateArithmetic to add 1 day.

Then I tied the Start Date on Easy Chart to Date(Immediate) on Calendar. Then I tied End Date on Easy Chart to the NextDay Custom Property.

**Odd Behavior - If I click more than One Day ahead on the Calendar, my Easy Chart Start Date doesn’t update correctly**. If I only click a Day ahead its fine. If I click any number of days before my currently selected date its fine. **I fine myself clicking the same Day twice to get it to work**

See attached project, maybe I am missing some low level Property of Easy Chart? I noticed this behavior in my core projects, I just made this test project as a sanity check.

[calToEasyChart (2018-06-11).proj](https://us1.discourse-cdn.com/inductiveautomation/original/2X/e/ec951500831c96759d55d8d9fad004a216787229.proj) (15.2 KB)

---

<div class="post-metadata">

**Author:** ![dano38291](https://avatars.discourse-cdn.com/v4/letter/d/9d8465/32.png) [@dano38291](https://forum.inductiveautomation.com/u/dano38291)\
**Post date:** [June 12, 2018, 12:21pm UTC](https://forum.inductiveautomation.com/t/calendar-to-easy-chart-odd-behavior/18405/2 "2018-06-12T12:21:27Z")

</div>

The Properties I was using to drive the Start and End Dates of Easy Chart. I used the same properties to drive the Outer Range Start and Outer Range End. This appears to fix my issue.

---

<div class="post-metadata">

**Author:** ![dano38291](https://avatars.discourse-cdn.com/v4/letter/d/9d8465/32.png) [@dano38291](https://forum.inductiveautomation.com/u/dano38291)\
**Post date:** [June 12, 2018, 2:52pm UTC](https://forum.inductiveautomation.com/t/calendar-to-easy-chart-odd-behavior/18405/3 "2018-06-12T14:52:09Z")

</div>

I had to use the idea of this post as well. It highlights strict ordering of Start and End Dates of Easy Chart.

[Error with property binding on Easy Chart Start Date](http://forum.inductiveautomation.com/t/error-with-property-binding-on-easy-chart-start-date/18008)

I used a propertyChange script and I checked if my Newly Selected End Date was newer or older than Previously Selected End date. Then I applied either the End Dates 1st to Easy Chart or the Start Dates 1st to Easy Chart depending on if your moving forward in time with your selection or backwards.