Constant line on first axis and line on secondary axis for line and clustered column charts

[LNpellen]

I used to have a clustered column chart to show the median of a value for different categories with a dynamic target constant line using a measure added to the Constant Line option in Analytics. To visualize the number of values in each category I had a second clustered column chart below to display the value count. (See first print screen below or first page in sample pbix).

Now I would like to show the median and count of values in the same chart together with the constant line. I want this mainly to access the count of values for filtering (hiding categories having too few values).

If I use a "line and clustered column chart" I could add the count of values as a line and the target value as a line (because it is a measure), but I would like the target value line to use the first axis as it is related to the values (<1.0) and the count of values to use a secondary axis (>>1). Now all lines are on the secondary axis (Y-axis Line) and all column values are on the first axis. (See second print screen below or second page in sample pbix).

Any idea on how I could choose axis for the constant line or solve this anyhow.

Sample pbix can be found here and print screens below.

Two charts - one with median of values + constant line, one with count of values. Cannot access Count of values for filtering the upper chart (?)

1 combo chart, but both lines (target value and count of values on same axis as both are lines). Visualization of target value is thus of no use.