Sumifs Excel

Hey,

I’m trying to do the exact same thing an the sumifs function in excel but I don’t really know how to.

I have found that it does work like that:

Sequence of two “Math Formula” nodes:

First one: Multiply the two columns using the expression Col1*Col2 and

Append a new column.

Second one: Use COL_SUM on the new column.

Is there any example for this nodes? I need some help please