Changing Variable Values at Runtime

Hi All,

I have got 2 variables v1 and v2 with following values:

V1: 01/2004 to 12/2004

V2: 01/2005 to 12/2005

After execution everything is working fine. The layout is generated dynamically.

Now I need a way to assign new values to the variables such as:

V1: 02/2004 to 01/2005

V2: 02/2005 to 12/2005

and execute the layout again.

How can i assign the variables new values automatically without having to change the values manually. Is there a planning function i can use?

Urgent advice requested.

Regards,

Salman