Sorting doesn't work

[bertvdb]

The sorting doesn't work.
What do I wrong?

It needs to be 1, 2, 3, 4, ...

[Akser · Accepted solution]

That's because your number column is not an actual number but text. Convert it to value and use the Sort function. 

[NandiniBhagya20 · Accepted solution]

Hi,

If your Nummer column is calculated column, then you can try something like below - 

Sort(Filter(your filter formula), Value(Nummer), Ascending)