Reading USBRecv Problem

[toml_12953]

I'm trying to read the data from a USB keyboard continuously.
Using the program below, I get

USBKBD Error: Bad
argument type

The same USB commands work on the Home screen just fine. All I want to do is stay in the loop until a key is pressed on the keyboard then print the HID data. What am I doing wrong?

Code:

EXPORT USBKBD()
BEGIN
LOCAL A:={0,0,0,0,0,0,0,0};

USBOpen(1084,8467);

WHILE A=={0,0,0,0,0,0,0,0} DO
  A:=USBRecv;
END;

PRINT(A);
END