C error: lvalue required as unary '&' operand

C error: lvalue required as unary '&' operand

I have a code error but not sure what's wrong with my casting and reference.
BOOL xMBPortSerialPutByte( CHAR ucByte )
{
CDC_Send_DATA(&((unsigned char)ucByte), 1); // code error here
xMBPortEventPost(EV_FRAME_SENT);
return TRUE;
}
The CDC_Send_DATA is defined as the following:
uint32_t CDC_Send_DATA (uint8_t *ptrBuffer, uint8_t Send_length);
Here is the error message:
port/portserial.c:139:19: error: lvalue required as unary '&' operand
Hope someone could help. Thanks!