Comparing data in a table by using chart

[Wade21]

Hello,

I'd like to compare the date between two columns from the same table.

I've used the chart extension but I can't seem to add it on my interface. 

Here is how the data looks like : 

Is it even possible to compare it on the interface? Or add the chart extension on the interface?

Would like some help please.

Thank you

[Alexey_Gusev]

Hi,
Seems like It's possible, but I cannot explain how I did it, interface designer UI looks better with each improvement but still strange to me. When I tried to propose interfaces to my colleagues, they said it's too hard and prefer to use old good tables.