Imacros - Invitation code missing 3 letters/numbers - imacros

Question

IMACROS.
I have to find out a invitation code to a site, it's a code that contains letters(a-z) and numbers(0-9). There are 3 missing, the XXX for exemple. But, how do I make a "for" to considerate letters and numbers on Imacros? I have to use javascript?
This is the code I have:
VERSION BUILD=8820413 RECORDER=FX
TAB T=1
TAB CLOSEALLOTHERS
URL GOTO=(url site)
TAG POS=1 TYPE=INPUT:TEXT FORM=ACTION:confirmcod.php ATTR=NAME:cod CONTENT=123XXXabc
TAG POS=1 TYPE=INPUT:SUBMIT FORM=ACTION:confirmcod.php ATTR=*

Answer 1

One way to do this without using Javascript is to preload a datasource with all of the possible combinations for the link. Iterate over this document until you find the proper link.
VERSION BUILD=8820413 RECORDER=FX
TAB T=1
TAB CLOSEALLOTHERS
SET !DATASOURCE c:\mysource
SET !DATASOURCE_COLUMNS 1
SET !DATASOURCE_LINE {{!LOOP}}
URL GOTO=(url site)
TAG POS=1 TYPE=INPUT:TEXT FORM=ACTION:confirmcod.php ATTR=NAME:cod CONTENT={{!COL1}}
TAG POS=1 TYPE=INPUT:SUBMIT FORM=ACTION:confirmcod.php ATTR=*
Wiki page for iMacro Datasource.
If you want to use javascript you will need to use iimPlay to generate the macro code on the fly. The example below iterates checks a random strings until iMacros returns 1 or sOK.
// possible keys for the link
var keys = '0123456789abcdefghijklmnopqrstuvwxyz';
// array to store past keys
var keyArray = [];
var myKey = "";
var i, j, k = 0;
var pageNotFound = true;
var macro = "";
var retCode = 0;
var myURL = "http://www.google.com";
do
{
i = keys.charAt(Math.floor(Math.random()*keys.length))
j = keys.charAt(Math.floor(Math.random()*keys.length));
k = keys.charAt(Math.floor(Math.random()*keys.length));
myKey = i + j + k;
if (keyArray.indexOf(myKey, 0) < 0)
{
keyArray.push(myKey);
// run imacro code with this key
macro = "CODE:";
macro += "TAB T=1\n";
macro += "TAB CLOSEALLOTHERS\n";
macro += "URL GOTO=" + myURL + "\n";
macro += "TAG POS=1 TYPE=INPUT:TEXT FORM=ID:gbqf ATTR=ID:gbqfq CONTENT=" + myKey + "\n";
macro += "TAG POS=1 TYPE=BUTTON FORM=ID:gbqf ATTR=ID:gbqfb\n";
retCode = iimPlay(macro);
// check if the page is found
if (retCode)
{
// if page is found set pageNotFound = false;
pageNotFound = false;
}
} else {
// key has been used already, try a different one.
}
} while(pageNotFound);