ran into a few bugs when going through the middle door. With both the nutrient lab and supplement machine. I get these errors "Error: <<if>>: assignment operator found within <<if>> clause (perhaps you meant to use an equality operator: ==, ===, eq, is), invalid: $op = 1". Looks like there's some if statements that have $op = 1, $op = 2, and $op = 3, instead of
$op == 1, $op == 2, and $op == 3,