Hi,
but I want the array start with 0 element, and I loop the client table if the client fullfill some condition,
I will insert the client code into the array. then how to define the array and insert into the array ?

PUBLIC ARRAY aClient[0]
select client
do while not eof()
    if substr(Client.clientcode, 1,1)="A"
      insert to aClient   <- I don't know how to code it for this part.
      
    endif
    skip 1
enddo