In dynamic tables with a button dropdown, the column's title doesn't update to the changed dimension unless you type <%=YourDimension%> in the dimension's name too. However, it returns the PQL statement defined for the variable instead of

Try the following:

create 2 variables.

 <%=YourDimension%> 

 <%=YourDimension_text%> 

When you select something using the button dropdown, make sure it sets both variables.

 <%=YourDimension%> : Dimension you want it to display

 <%=YourDimension_text%> : Text you want it to display as title

Then set the text variable as title.

Thank you so much, Joren! Problem solved!