Thanks for the link. I have taken a look at the examples, and it's clear to me that what lot amount does is just multiplication.

From my example above, I have shown that the simulated trading results are not affected by the lot amount variable, as if it is doing nothing. I understand that the lot amount variable affects other cost variables as well, and that's why I created a special asset list to show that the trading result does not respond to the lot amount at all.

I cannot make this clearer, but how much effort would it take for you (or anyone else) to take a careful look at my example, and comment why the simulated result would be expected.