# Perspective Sparkline Polling **URL:** \ **Category:** Ignition Early Access\ **Created:** [August 1, 2019, 7:45pm UTC](https://forum.inductiveautomation.com/t/perspective-sparkline-polling/27098 "2019-08-01T19:45:13Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![mattn1](https://avatars.discourse-cdn.com/v4/letter/m/54ee81/32.png) [@mattn1](https://forum.inductiveautomation.com/u/mattn1)\ **Post date:** [August 1, 2019, 7:45pm UTC](https://forum.inductiveautomation.com/t/perspective-sparkline-polling/27098/1 "2019-08-01T19:45:13Z")
In the vision sparkline component there is an option for polling. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/c6b61b784a338f6dd9ea73d3a161047a76eb2675.png) I cannot find any way to configure this on the perspective component. Once it loads the view on a page it wont update the sparkline chart till I reload the view. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/a/a29e39881d3f22243e326e61dfe5a0f5379e3a64.png) Is there anyway to configure the sparkline chart to update in perspective? ---
**Author:** ![osolorzano](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/osolorzano/32/6432_2.png) [@osolorzano](https://forum.inductiveautomation.com/u/osolorzano)\ **Post date:** [August 1, 2019, 11:13pm UTC](https://forum.inductiveautomation.com/t/perspective-sparkline-polling/27098/2 "2019-08-01T23:13:34Z")
You have two options: You can set the Time Range to Realtime, which has it’s own Polling option that will appear which functions like the Vision polling. While in Historical mode, you may notice that the Start Date and End Date are expressions. By default, they utilize the `now(0)` expression which only evaluates once. But if you change the `now(0)` expression in both the Start and End date to something like `now(1000)` the beginning and end date will poll at a rate of one second. ---
**Author:** ![mattn1](https://avatars.discourse-cdn.com/v4/letter/m/54ee81/32.png) [@mattn1](https://forum.inductiveautomation.com/u/mattn1)\ **Post date:** [August 2, 2019, 12:18pm UTC](https://forum.inductiveautomation.com/t/perspective-sparkline-polling/27098/3 "2019-08-02T12:18:04Z")
cool thanks.