>1) Wich are the correct syntaxis?:
>
>varname="list1"
>dimension &varname(1,3)
> or
>dimension &varname.(1,3)

DIMENSION &VarName[1, 3]

>2) And in this other case?:
>
>ArrayLenght=alen(&varname,1)
> or
>ArrayLenght=alen(&varname.,1)

ArrayLenght = ALen(&VarName, 1)

HTH