Hola Leandro,
Una pregunta, xq un nuevo campo?.
Bueno, para poder settear el lookup te dejo el script
var lookupObject = new Object;
var lookupObjectArray = new Array();
lookupObject.id = "21EC2020-3AEA-1069-A2DD-08002B30309D";
lookupObject.name = "John Doe";
lookupObject.typename = "systemuser";
lookupObjectArray[0] = lookupObject;
crmForm.all.new_userid.DataValue = lookupObjectArray;
crmForm.all.new_userid.ForceSubmit = true;
Si va a ser el mismo valor, puedes obtener el valor del lookup del owner y ponerlo en el nuevo campo, para ellos necesitas este script. Que te ayudará a obtener el valor del campo owner
var customer = new Array();
customer = null;
// This gets the lookup for the attribute customerid on the Opportunity form.
customer = crmForm.all.customerid.DataValue;
// If there is data in the field, show it in a series of alerts.
if (customer[0] != null)
{
// The name of the customer.
alert(customer[0].name);
// The GUID of the customer.
alert(customer [0].id);
// The entity type name of the customer.
alert(customer[0].typename);
}
Salu2 Atilin | http://www.dexrm.com