# Bar Charts in Ignition 8 **URL:** \ **Category:** Ignition\ **Created:** [April 10, 2019, 4:27pm UTC](https://forum.inductiveautomation.com/t/bar-charts-in-ignition-8/24004 "2019-04-10T16:27:50Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![fred.berryman](https://avatars.discourse-cdn.com/v4/letter/f/3ab097/32.png) [@fred.berryman](https://forum.inductiveautomation.com/u/fred.berryman)\ **Post date:** [April 10, 2019, 4:27pm UTC](https://forum.inductiveautomation.com/t/bar-charts-in-ignition-8/24004/1 "2019-04-10T16:27:50Z")
So I’ve just upgraded from 7.9 to 8 and have several bar charts with multiple Tag History / SQL sources. The only way I can get the bar charts to display data is to delete all but one tag. Any more than one source tag and the chart is completely blank (doesn’t even display the legend). Is this a bug or do I need to change something to get them to display correctly in 8? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [April 11, 2019, 3:32pm UTC](https://forum.inductiveautomation.com/t/bar-charts-in-ignition-8/24004/2 "2019-04-11T15:32:21Z")
This sounds like a bug - nothing in Vision’s charting should have changed in a way that would break existing projects. Would you be able to send in a project export or similar? ---
**Author:** ![fred.berryman](https://avatars.discourse-cdn.com/v4/letter/f/3ab097/32.png) [@fred.berryman](https://forum.inductiveautomation.com/u/fred.berryman)\ **Post date:** [April 12, 2019, 8:29am UTC](https://forum.inductiveautomation.com/t/bar-charts-in-ignition-8/24004/3 "2019-04-12T08:29:13Z")
I managed to solve it. For some reason the aggregation mode settings had got changed upon upgrade. I changed them back to what they should be and now it’s functioning as normal. Thanks for your help.