The LognormalValue function takes two parameters: mean and standard deviation. These are not the mean and standard deviation of the lognormal distribution – they are the mean and standard deviation of the underlying normal distribution
Recall that the lognormal distribution is defined as
$$ X = e ^{N(\mu ,\sigma )} $$
If you want to specify the mean and standard deviation of the generated lognormal distribution, use the function ScaledLognormalValue.