var lookupData = new Array();
// Create an object to add to the array.
var lookupItem= new Object();
// Set the id, typename, and name properties to the object.
lookupItem.typename = 'transactioncurrency';
lookupItem.name ="人民币"
// Add the object to the array.
lookupData[0] = lookupItem;
// Set the value of the lookup field to the value of the array.
crmForm.all.transactioncurrencyid.DataValue = lookupData;