Hello again, sorry to ask you so much things

I have an other problem :

I'm using the component in a web application.
On the client side, the user modifies the diagram, so I update the hiddenfield each time he draws something :

Sub fcx_DocModified()

  form1.HiddenField1.Value = form1.fcx.SaveToString(True)
    end Sub 

I have a button which authorize the user to export to xml. The matter is that the page is reload, so on the server side, I try to get the value of the hidden field :

myflowChart.LoadFromString(HiddenField1.Value) 

but it raises an error : Error HRESULT E_FAIL has been returned from a call to a COM component.

So, I would like to know if it's possible to get, on the server side, the modifications done by the user on the client side?

Yes, HiddenField1.value has a huge huge string. Weirdly, I can't print it in a msgbox (probably because of the size) but I arrived to do it on the client side

Here you can see the client side:
http://img68.imageshack.us/my.php?image=hiddenfieldclientli8.jpg

Here you can see the beginning of the value of hiddenfield1.value on the server side

http://img222.imageshack.us/img222/8802/hidedenfieldvalueld8.jpg
But I'm unable to use it in a msgbox, so I think that's why it cannot be used with the LoadFromString

It's not necessary, I finally understood my error : Sooner, to try something else, a collegue adds a reference to the flowchart 3.0 library. When I changed it to 4.1, it works immediately.