Twoway tsline of different groups in one image

[Barbara Heerkens]

Hi,

I want to make a time series graph of average leverage ratios of two groups of firms over years (connected and non-connected)
I typed in the code

twoway (tsline Leverage), by(, legend(on)) by(connected)

.
Now is my question, how do I get both lines in one image?

I tried creating two different y variables Leverageconnected and Leveragenonconnected and entered

twoway (tsrline Leveragenonconnected Leverageconnected), legend(on)

However, now my Y variable is not shown as Leverage anymore (I would like that) and from the lines you cannot see which one belongs to which group.

Does anybody know how to deal with this?

Thanks