Fatal error: Call to undefined function: mosgetparam() in...administrator/compon

[usgetata]

Hi everyone, I am new to VirtueMart and run into this problem...
I have setup to use USPS to ship all products with free shipping over $100.00
When I checkout with order over $100.00, free shipping came up and it worked fine.
But when I tried to checkout with order less than $100.00. On checkout step 3 this message comes up:
Fatal error: Call to undefined function: mosgetparam() in ********/administrator/components/com_virtuemart/classes/ps_checkout.php on line 72
I searched in the forum and didn't get any answer. Does anyone know what's wrong and how to fix it?

Thanks!!!

[lowmips]

what version of virtuemart are you using? I've looked in 1.1.2 and 1.1.3 ps_checkout and do not see this function call.

-Reggie