Add a value to Year in date

static void YearInDate(Args _args)
{
Date date1,date2;
int length,day,mth,years;
;
length = 2;
date1 = systemdateget();
day = dayofmth(Systemdateget());
mth = mthofyr(SystemDateget());
years = year(SystemDateget());

date2 = mkdate(day,mth,years+length);
print date2;
pause;
}