setElems question

[Clover4]

Using  version "2021.1".

Trying to use the setElems function but not having success.   I want to use setElems to change the value in an array to a new value.  When I use setElems in a rule it says "undefined rule".  

My array is set up like so:

attr Array1D = [0,0,0,0]

Rule-->
setElems(Array1D,0,5)

Thanks in advance!!

[Hadi_yousefi]

hi Brain - this way you can use

attr Array1D = [0,0,0,0]

A =setElems(Array1D,0,5)

Rule-->
print(A)