is there a way to change price in cart once the item is in the cart, thru the code on pressing 'Update' button?

I'm trying, thru the code, to change the price of an item in the cart, if the client orders less than the number of items in a quote. I have an electronic quote page where they can add to cart. It all works. However, if they change the Quantity in the Cart itself to less than the number of items quoted, the price should go up to the original price of an item that is pulled from the database.

My question is really, can this be done thru the code? I'm trying for example:

<?php
If (something happens) {
$eCart->DisplayInfo("Price") = $theoriginalpricefromtable;
}
?>

but it errors out the cart.php page (even though there's nothing missing in the code).

So...how can I adjust the number in the $eCart->DisplayInfo("Price") ?

Thanks.

The way I would do it is to create two more columns in your cart:
DiscountedPrice
DiscountThreshold

Then you can add a calculation to the cart for:
UsePrice = ([Quantity] >= [DiscountThreshold])?[DiscountedPrice]:[Price]

And update the existing TotalPrice column from: [Price} * [Quantity]

To:
[UsePrice] * [Quantity]

Finally update the cart to display the UsePrice column instead of the Price column wherever it is displayed and update your payment gateway code to do the same when processing payments.

Thanks for the reply. Was out of the country for a few weeks. I started doing this but things got changed on me by bosses, so I have to approach it differently. I haven't tackled it yet. However, I need to open tech support ticket for another question. I'll post the question and you can let me know if you have time to do it with me. Thank you again.