public partial class KWPedidoPlantillaV2 : System.Web.UI.Page
{
private static ArrayList fliawebsaved = new ArrayList(); 
 .....

the var is for all the session open.
What must I do to define the var for only the user accesing the page.
Thank you.

 You're right, using static will make the array shared between all users.

You can create the array and store it in the user session:

public partial class KWPedidoPlantillaV2 : System.Web.UI.Page
{

    private ArrayList fliawebsaved;

    protected void Page_Load(object sender, EventArgs e)
    {
        fliawebsaved = Session["MyArray"] as ArrayList;
        if (fliawebsaved == null)
        {
            fliawebsaved = new ArrayList();
            Session["MyArray"] = fliawebsaved;
        }
    }

Thank you very much!

 No problem!

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