What is wrong with my javascript imacro code

I tried writing writing a script for imacros in javascript. However, it doesn't work. When I press play, it just does nothing. No error, no nothing. I had a imacro script a friend gave me (javascript imacro), that works, but mine doesn't. Can any body tell me what I am doing wrong.

PS: I am a beginner coder.

My code:

var macro;
macro = "CODE:"; 
macro +="SET !TIMEOUT_STEP 2" + "\n";
macro +="URL GOTO=LINK_TO_SITE" + "\n";
macro +="EVENT TYPE=KEYPRESS SELECTOR=* KEY=35" + "\n";
macro +="WAIT SECONDS=2" + "\n";
macro +="EVENT TYPE=KEYPRESS SELECTOR=* KEY=35" + "\n";
macro +="WAIT SECONDS=2" + "\n";

var macro1;
macro1 = "CODE:";
macro1 +="TAG POS= TYPE=A ATTR=TXT:*<SP>Open<SP>Link" + "\n";

var macro2;
macro2 = "CODE:";
macro2 +="TAG POS= TYPE=BUTTON ATTR=TXT:Create<SP>Link" + "\n";

var macro3;
macro3 = "CODE:";
macro3 +="TAG POS=1 TYPE=DIV ATTR=TXT:View<SP>More" + "\n";

var macro4;
macro4 = "CODE:";
macro4 +="WAIT SECONDS=180" + "\n";


var i = 11;
while (i < 11) {

    iimSet("i",i)
    iimPlay(macro1)

    var j = 1;
    while (j <= 61) {

        iimSet("j", j)
        iimPlay(macro2)

        if (j % 30 == 0) {

            iimPlay(macro3)
        }

        if (j == 60) {

            iimPlay(macro4)
        }

        j++;
    }

    i--;
}