Error Bars Not Showing in Options

I would like to use the new Error Bar feature. I am aware you have to turn it on in options within "New Features" , but when I go there I don't have the ability to select "New Format Pane" or "Error Bar". The feature shows up for me as an option on my chart, but nothing shows up on my graphs when I turn it on and try to add an upper or lower limit. I am using the latest version of Power BI.

Thanks in advance!