Chart : line to show gap between reference lines

[#1]

Hi,

--- I'm new to Qlik, and already impressed with the responsiveness of the user community --

I charted 2 reference lines on a line chart, each based on a variable.

color ok

label ok.

1. how to rotate the reference lines label along the vertical reference line?

2. how to show the gap between the 2 reference lines as a gap: ie segment line in color, with label showing " gap= xxx" with value of gap?

I tried creating an expression charted as line, then playing with its background. BUT: the X data points of the main dimmension line may may be outside the 2 ref lines ... hence the line does  not get colored at the right place.

I only have a personal edition for now, so can't access any

IG.