What problem do you've with this code? What error do you get?

>>If you're doing it from the form's method than

Thisform.mytreeview.OBJECT.Indentation = xIndentat

Can you post your code?
>>
> Sure! :)
>
>This code is being called from the TreeView MoudeDown Method.
>
>

>WITH This.OBJECT
>
>  xIndentation = INPUTBOX("New indentation value","HELP, Sergey!",ALLTRIM(STR(.Indentation)))
>
>  xIndentation = IIF(VARTYPE(xIndentation) == T_CHARACTER,VAL(xIndentation),.Indentation)
>			
>  IF  xIndentation > 0
>
>    .Indentation = xIndentation
>		
>  ENDIF			
>
>ENDWITH
>