Fact Box visiblity in Form Ax 2012 X++

//Fact Box visiblity in Form Ax 2012 X++
PartList       partListFactBox  = new PartList(element);
 FormRun     formRunFactBox;
 int                i;
 for (i = 1; i <= partListFactBox.partCount(); i++)
 {
       formRunFactBox = partListFactBox.getPartById(i);
       formRunFactBox.design().visible(false);
 }