In a tight loop with no code but generating a call to SYS(2015) and adding a record to a cursor (000's per second), I see no dups.

>I think I tried it and if your cycle is faster than 1/100 or 1/1000 of a second, it duplicates. Which may be good in a way - it could "force" us to use keys associated with records in a table.
>
>>SYS(2015) should always be unique. SYS(3) had the problem with calling it too quickly.
>>
>>>Welcome back :o)
>>>
>>>Yes, The loop can be too fast, but this is an example HOW to add a node. I suppose nobody using SYS(2015) as a Key, because when use click on Node how S/He can do something with the record matching that node?
>>>
>>>>Sometimes the loop may be too fast for a SYS(2015) to generate a unique key.
>>>>
>>>>>>Treeview - trying to display contents from a dbf
>>>>>Nothing easier :o)
>>>>>But can you post the structure of the DBF and how you want the treeview looks like?
>>>>>Most simple way:
>>>>>

>>>>>thisform.oleTree.Nodes.Add(,1,"RootDBFNode","YourDBF Name",,)
>>>>>SELECT YourDbf
>>>>>SCAN
>>>>>   oNode = thisform.oleTree.nodes.add("RootDBFNode",4,SYS(2015), ALLTRIM(Name),,) && Supposing NAME is field from your DBF
>>>>>ENDSCAN
>>>>>