How can we change page format from A6 to A4 in smart forms

Hi,

Currently smart form is printing output in A6 page.Now my customer wants in A4 page.How can we change the page format from A6 to A4.Now the output should print in A4 page instead of A6 page.

I checked the page format in form attribtes it is DINA4.Do in need to change the page format here.

Is there any settings for this.Plase advice.I appriciate your guidence in this regard.Thanks in advance