unique (predefined) filter and values filtered by other expressions
When I set a unique (predefined) filter the "values filtered by all other expressions" functionality is lost.
I explain my need. I have a long distance trail with 48 stages. I want to allow the user to select the route he wants to visit, for example stages 3-7. But I want the names of the start and end locations of the stage to appear in the filter since the user does not have to know the stage number.
To do this I use two filters (is at least, is at most) but I can't get the first filter to affect the second.
Another thing that happens is that, when entering the predefined values, the numerical order of the original field is lost adopting the order of the text values that I enter. It would be nice to be able to choose as if y place a number as a character order is not the desired.
Thank you.