need help about restrict shipping method by $cartShowTotal

hello all, i need help on how to set up different shipping method base on shopping-cart sub-total.

For example, i like ship by USPS if the sub-total value is less than Us$100, if the sub-total is higher than US$100, it will show one message say you will need to select UPS method.

When i try

if ($cartShowTotal>100) {
$error = true;
}

nothing happen, it seems $cartShowTotal can not be regonized.

Really appreciate for your concern. thanks.

That isn't a variable in Zen Cart except on the shopping__cart page so its value is 0 in the checkout_shipping ... :eek:

Wouldn't it be better to customize the shipping modules themselves to only display based on price rather than have the customer have to think?

Thanks Ajeh for your tips and advice, it is really better and easier.

What i though is shipping method shown bases on shopping cart price, if higher, then unselectable and only show one message.

After two days trace, $_SESSION['cart']->show_total() looks like the one what i am looking for.:smile: