Hi TanguyLSY,

 When you say "open another process instance", do you want to create or launch a new process instance from a server event?  Or do you want to open a particular work item (client event) from a server event?

-mike

Let assume I have a process A

During my process, I've launched through a form a new process (B) and I gave it the ID of process A.

in a server event in process B, I want to open Process A to update some of its datafields.

What is important here is that process B does not come from an IPC event.

After you give process B the ProcessInstanceID of process A your code should look like this.

using SourceCode.K2ROM;

private void UpdateProcessAFromProcessB(int ProcessInstID)
{
      Connection cnn = new Connection();
      cnn.Open("ServerName");
      ProcessInstance pi = cnn.OpenProcessInstance(ProcessInstID);
      pi.DataFieldsÂ"MyDataField"].Value = "NewValue";
      pi.Update();
}

Thanks but... I know how to update a datafield but if I paste your code directly in a server event, does it work?

 I mean, I'm not sure that K2ROM library is available directly in a server event code...

It's not, you'll want to wrap this code in a web service or assembly.  Also note that you should never open a connection back into the currently running instance.  For example if the current process that is executing is ProcInstID 100, within this process there should never be a server event that opens a connection back into this running process (100).  The server will lock most of the time.  However, in your scenario it is acceptable to open a connection from one process into another.

-mike