Could not select any fields in visual builder for aggregation? (SOLVED)

Could not select any fields in visual builder for aggregation? Anyone knows how to figure out? Thank you
I have the number type metrics in the mapping .

Now I figured that out, the data type could bot e short, should like something like long.

Hi,

Thanks for keeping us posted. This will help our other users.
Can you please mark this as solved?

Cheers
Bhavya

Marked. Thanks!