Hiding a Page Dynamically

Hi Guys.I have an urgent requirement.Pls help on this.I need to hide/visible a page dynamically based on the text content inside the page is blank or not..I have wrapped the page into the subform,then in the initialize event i wrote the below code,

if(data.pagename.fieldname.rawValue===''"")

{

data.subformname.presence="hidden"

}

it is not working.

i tried with formready and docready event also ,it is not working.

Please suggest any solutions..