Detect Custom Field change

[SBarnes]

How can you detect the change to a custom field on the sales order history I have tried adding the following code to the red end of the sales order but the event doesn't fire

Code: Select all

var history = salesOrder.SalesOrderHistorys[salesOrder.CurrentHistoryNo];
history.CustomSettingValues.get_ItemFromSettingName("NoPallets").PropertyChanged += DetrackWorker_PropertyChanged;
history.CustomSettingValues.get_ItemFromSettingName("CollPallets").PropertyChanged += DetrackWorker_PropertyChanged;

private void DetrackWorker_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
    if (e.PropertyName.ToUpper() == "CONTENTS")
    {
        salesOrder.GenericObjectCollection.SetOrAdd<bool>("PalletsChanged", true);
    }
}