Ability for multiple lines on graph

I’m trying to create a graph on a dashboard that displays figures from multiple boards and I want the graph to be a multi-line graph with a separate line for each board connected (I am trying to plot number of tests vs number of quality incidents per month, with the figures pulled from separate boards). Unfortunately, monday.com support have said currently the dashboards feature does not support displaying separate lines for each board in a single graph, and the data can only be displayed cumulatively across boards. Is there any way around this?