How to sort table based on column that only contains numbers

[kura2berlari]

Sorting will always resulting text sorting eventhough already ticked as number sorting if possible.

How to do this?

Similar to this thread https://zennolab.com/discussion/threads/putting-information-to-table-and-sorting.25389/
but there's no solution there.

Thanks

 

[kura2berlari]

Found the answer, it seems it will sort as number if only there's no non-number on the column. So if there's an empty cell on the based column, or letter, it will be sorted as text.