How to pass parameters from Form to form

Hi,
Sometimes we want to open a form from another form with the selected record . For this we need to pass the parameters from form A to form B . This could be achieved by using args class by overriding the click method of button on form A.
In this example we will use two forms form A is salesLine form and form B is inventenquiry form. when the user will click on the button on form A it will open form B filtering the record according the form A value.lets start

1. Put a button on form A and override its click method
2. write the following code

void clicked()
{
    //super();
    Args args=new Args();
    Itemid itemid;
    FormRun formRun;
    ;
    args.name(formstr(InventEnquiry)); // invent enquiry is the form B
    args.parm(salesLine.ItemId);// passing the item id from Form A
 
    formRun = classFactory.formRunClass(args); /// passing the args class
    formRun.init();
    formRun.run();
    formRun.wait();
 
}
3.Now override the init method of the form B data source inventTable

public void init()
{
     super();
     if(element.args().parm())
    {

       this.query().dataSourceName('InventTable').addRange(fieldnum(InventTable,ItemId)).value(element.args().parm());
       this.query().userUpdate(false);
            this.query().interactive(false);

    }

}

Hope it helps
cheers,