Help! Navigate between 2 dates

[snap990 1]

Hi! I want to navigate between 2 dropdown dates value, 2013 08 01 to 2013 08 05

Can you please help me what is wrong on this code.

 

ui drop down("Start Month", "1,2,3,4,5,6,7,8,9,10,11,12", #s month)
ui drop down("Start Day", "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31", #s day)
ui drop down("Start Year", "2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013", #s year)
ui drop down("End Month", "1,2,3,4,5,6,7,8,9,10,11,12", #e month)
ui drop down("End Day", "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31", #e day)
ui drop down("End Year", "2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013", #e year)
clear list(%dates)
set(#current year, #s year, "Global")
loop($subtract(#e year, #s year)) {
    if($comparison(#current month, "=", "")) {
        then {
            set(#current month, #s month, "Global")
        }
        else {
            set(#current month, 1, "Global")
        }
    }
    loop(12) {
        if($comparison(#current day, "=", "")) {
            then {
                set(#current day, #s day, "Global")
            }
            else {
                set(#current day, 1, "Global")
            }
        }
        if($comparison(#current month, "<=", 12)) {
            then {
                loop(31) {
                    if($comparison(#current day, "<=", 31)) {
                        then {
                            if($comparison(#current day, "<", 10)) {
                                then {
                                    set(#dd, "0{#current day}", "Global")
                                }
                                else {
                                    set(#dd, #current day, "Global")
                                }
                            }
                            if($comparison(#current month, "<", 10)) {
                                then {
                                    set(#mm, "0{#current month}", "Global")
                                }
                                else {
                                    set(#mm, #current month, "Global")
                                }
                            }
                            set(#date, "{#current year}{#mm}{#dd}", "Global")
                            navigate("http://www.google.com/{#date}", "Wait")