Access Filtered data to get sum of a particular column

[DNDRAHUL]

I am trying to get the sum of a particular column of only the filtered data after I perform a search.
Basically, I have a weight column and need to update the same with the sum of all the weight which is present after I perform a search

[lucasousi]

I'm on same situation.

[eliudrojas]

Somebody knows how to select only the filtered rows? If I filter my data and after that I choose the checkbox to select all, All the rows are selected including those that are not visible