>>>This is possible that the error occur because i try to access his property before the object has finish to be create?
>>>
>>>Ex: in Methode "beforeopentables" in the dataenvironment object
>>
>>when u open a form the even sequence is
>>
>>form load event
>>form DE init event
>>form controls init events
>>form init event
>>etc. etc.
>>so if u reference an object in the DE
>>it is not inited yet
>>
>>Arnon
>
>Thank's Arnon for your help
>
>Do you know how to make a object property that contain a reference to a other object

Hi Arnon,
I think that i find my problem. I try to use "VALUE" property for my referencing and it gives me "data mismatch". But it doesn't when i use a other property name like "DATA" do you have a idea for this weird things.