Legend reverses order when changing between Bar and Line Chart

[#1]

I have a chart with Fast Change that displays dimension values in a legend  in order: 1, 2, 3, 4, 5 in the Bar chart. Switching to the Line chart, the legend displays the values in reverse order: 5, 4, 3, 2, 1. How can I get both charts (bar and line) to display the legend values in the same order? Thanks,

[#2]

What happens when you remove bar chart and only have Line chart?

Can you attach a sample maybe?