single quotes in query

I want to insert a graph in my woocommerce page, it works just fine but WordPress changes some of my JSON code after I hit save.

a single quote (‘) is saved as (') and with any updates the code does not work anymore.

Below an example:

chart_legend='{“position”:”top”, “textStyle”:{“fontSize”: 13}}’

is saved as ->

chart_legend='{“position”:”top”, “textStyle”:{“fontSize”: 13}}'

Is there a way to avoid this?

https://ww.wp.xz.cn/plugins/inline-google-spreadsheet-viewer/