It looks like you might have a problem in your code.

you do
lxobj = lxobj.x + (2 * this.x)

this is supposed to be the cascading part of the code I believe,
But do you mean, and correct me if I am wrong,
lxobj.x = lxobj.x + (2 * this.x)

Seems to me that this was the intent of the program.