Your image links didn’t come through. Attempting to repost here:
These are the images:
<img src=”http://www.freeimagehosting.net/image.php?87d5753b0f.jpg” alt=”Condition” />
<img src=”http://www.freeimagehosting.net/image.php?de66e96277.jpg” alt=”Formula” />
Elham, I really do not see the relation of these models with your description of ‘formula’ and ‘condition’. The models do not seem to use any of the variables mentioned. Could you please explain the models a little, so we can better understand how they are constructed in order to provide some help ?