Bridge on bar of bar charts

[Grazia Palmisano]

Hi all,

is there a way / workaround to accomplish something like the attachment

In practice, if possible, I would need to connect each bar of a bar chart with the next one via a bridge on which to report the variation value.I tried with the combination chart but using a series with line and setting the appearance "draw as step line" but

it doesn't do exactly the same thing because the line doesn't draw a bridge between the bars.

Thank you