>>I have already set the datasession to 2-private, but it doesn't work.
>>
>>let me explain to you :
>>
>>I have only one form but I want to open the form more than one because each form
>>was filtered with some filter condition, for example :
>>
>>- I open the form with this condition : Set filter to Sales='1997'..
>>- I minimize the form and I run it again but with other conditon for eg.
>> Set filter to Sales='1998' ..
>>
>>The problem is : when I go back to the 1st form ( filtered with sales='1997' )
>>filtered condition was changed with the last form (sales='1998')
>>
>>pf. the form contains the grid control
>>
>>
>>can you explain to me, please ..?
>
>Where did you open the tables? It should be in the Data Environment. You can also use the filter property of the Cursor object in the DE.

BTW, what you should do like this:

Create PARAMETER to handle your filter value at Init Event.
Create custom property and assign the parameter value into it, so that your Init Event will look like this:

 LPARAMETERS nyear
            Thisform.pnyear = nYear
            Select Table 
            SET FILTER TO table.year = Thisform.pnyear

IF using Data Environment

Thisform.DataEnvironment.Cursor1.Filter = "table.year = Thisform.pnyear"

Syntax in calling the form would be:

DO FORM myformname WITH 1998