Replace specific values in a list

Hi,
I want to remove all circles that are smaller than 1 or replace them with zero. Does anyone know how I replace the values without them changing their position in the list?

thanks in advance

greetings Tim

As an example:

(1) 2,5
(2) 3,6
(3) 0,2
(4) 1,1
(5) 0,6

into

(1) 2,5
(2) 3,6
(3) 0
(4) 1,1
(5) 0

Kartierung.gh (119.3 KB)

Kartierung Edited V0.gh (242.7 KB)
Just add an Expression.