I am using a variable based dimension switch on a Qlik Sense report as follows:
Dimension expression: [$(vDimLevel1]
The vDimLevel1 variable holds a string value of a field name, that is derived based on some other criteria, that I do not want to complicate this discussion with. So keeping it simple, this variable gets a field name (string), which then the expression converts to an actual field name.
It works!
It works just fine when I use it on a pivot table and also as a dimension in a chart.
Funny thing, Qlik Sense does not like it when I add such an expression, as a second dimension in any kind of visualization object.
The same exact expression works just fine when used as a second dimension in a Pivot table.
This is driving me crazy.
Is this a Product bug or do chart axes (2nd dimension) need a different format of $ expansion or something?
This seems to be a bug, and is currently with Qlik support.
Also, looks like I missed an important part of the story.
This error does not occur, if I use static variables.
It happens when I used an expression in a variable and then use a dollar sign expansion with the variable, at run-time to switch dimensions. It throws an error, when using such in the 2nd dimension in a graph.
