Simple question getting the index of data in spread

hello ,
im having a probably quite simple problem but i dont get to solve it.

im having a spread and somewhere in there is something.
for example a 1.

how can i build something, that tell me on what position of the spread, what indicie, the 1 is at??

ive no clue


Sift (Value)

compare desired value with = (Value)
use the result with Select (Value) and have a look at its “Former Slice”-outlet

in both cases take care of the “Epsilon”-pin