Push Parameters in POST HttpRequest

Hi Dudes, i have the following problem: I want add more parameter in params. I have an array with some objects {num1, num2, num3} which i want add in the params variable like in "Code 2"!

Code 1

var params = {
    username : username,
    email : email,
    gender : gender,
    password : Ti.Utils.md5HexDigest(password)
}

var params = {
    username : username,
    email : email,
    gender : gender,
    password : Ti.Utils.md5HexDigest(password),
    num1:num1,
    num2:num2,
    num3:num3
}