} else if (variableName.equalsIgnoreCase("WORLD-HEIGHT")) {
d.minPycor_$eq(growMin(_minPycor, _maxPycor, value, d.minPycor()));
d.maxPycor_$eq(growMax(_minPycor, _maxPycor, value, d.maxPycor()));
} else if (variableName.equalsIgnoreCase("WORLD-DEPTH")) {
WorldDimensions3D wd = (WorldDimensions3D) d;
wd.minPzcor_$eq(growMin(_minPzcor, _maxPzcor, value, wd.minPzcor()));
wd.maxPzcor_$eq(growMax(_minPzcor, _maxPzcor, value, wd.maxPzcor()));
}
return d;
}