Agnes,
If this is at design time, you do it the same way as any new property, just add [1] to the end of the name so that VFP know it's an array. You can specify the actual dimensions if you know what they are ahead of time, or just use [1] in the dialog and use a DIMENSION statement in the code to resize it at runtime. It'll automatically get dimensioned if the array is the INTO clause of a SQL-SELECT statement.
>I would want to add a property to a form , a property as an array ,like : 'alelist[1,2]'
>is it possible ? , How .