Thank you for your help but unfortunately none of these options alleviated the error. If you or anyone else has any other suggestions please send them my way. Thanks again.

>Hi Sam,
>
>The Null literal doesn't have a type. Try to create a variable of object type and pass it to a COM.

loNullObj = CRREATEOBJECT("Label")
>loNullObj = Null
>...
>

If it doesn't work, try to pass 0 (zero).
>
>>I have a created an instance of a C++ COM component in my VFP command window. I then try to call a function that accepts a string and an object but when I try to send .NULL. to the second parameter, which accepts an object, I get a Type Mismatch error. Why is .NULL. not an acceptable value for this parameter? Thanks for any help.