>

>IF VARTYPE("SomeVariable") <> "U"
>  * Variable exists
>
>IF VARTYPE("SomeObject") = "O" AND NOT ISNULL(SomeObject)
>  * Object exists
>...

>
>

This is the TYPE() syntax

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
...

>>I have in mind that VFP has a function to test if a variable or object exist. I'm trying to locate it in the help file but I can't.
>>Any help will be appreciated.
>>Thanks in advance.