Date Sorting from Backtesting Report

I am trying to sort date column of backtesting report by click on up arrow and down arrow of the title bar of 'from date', but it scrambled. Please see the attach

ment. but when I copy the data to excel and try to sort, it sorts perfectly. I used SetSortColumns(3); in my backtest afl but nothing works.

How can i sort it out. thanks in advances.

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As to question:

Change your Windows regional settings to use Numbers, not names, for months. BTW you don’t need to sort that list it is sorted out of the box any clicks.