I can't upload my file unfortunately as it's actual company data.
What I am trying to do is to filter both axis in a dual axis chart.
First axis is units sold from "orders" data.
Second axis is a calculated field (units / sessions) called "conversion %" from "viewership" data.
These two data sets are blended. Relationship established are "date", "part #" and "manufacturer".
I've created parameter and calculated field for the "manufacturer" dimension, so I could filter the units axis by manufacturer.
In my other dual axis sheets, I could use a single filter to filter for both axis, but each of these axis are dimensions. However, in this sheet, one of the axis is a measure. And, Tableau doesn't seem to let me create a parameter for measure.
What do I need to do to be able to filter both axis in a blended data set while one axis is a dimension and the other axis is a measure?