>>My syntax is correct.
>>
>>>The correct syntax is
>>>
>>>

>>>IF VARTYPE(m.SomeVariable) <> "U"
>>>  * Variable exists
>>>
>>>IF VARTYPE(m.SomeObject) == "O"  && this part is useless AND NOT ISNULL(SomeObject)
>>>  * SomeObject is an Object reference
>>>...
>>>

>
>Sorry, it isn't
>
>The variable name does not need quotes for vartype()
>
>VARTYPE("SomeVariable") will always return 'C'

It was a typo. I meant TYPE() not VARTYPE().