21R1 (Build 21.105.0023) - SOOrder_RowSelected Event is not executing

Hello Everyone,

I have extended Sales Order graph and override SOOrder_RowSelected even like below but it is not executing. Can someone help with the root cause or suggest a fix for this please.

Sample Event Code:

 protected virtual void SOOrder_RowSelected(PXCache cache, PXRowSelectedEventArgs e, PXRowSelected baseHandler)   
        {
            baseHandler?.Invoke(cache, e);

            SOOrder row = e.Row as SOOrder;
            if (row == null) return;           

            if (!string.IsNullOrEmpty(row.ShipTermsID) && 
                         (row.CuryLineTotal + row.CuryMiscTot + row.CuryTaxTotal) <= 49 && row.Status != SOOrderStatus.Completed && row.Status != SOOrderStatus.Invoiced)
                cache.RaiseExceptionHandling<SOOrder.curyOrderTotal>(row, row.CuryOrderTotal, new PXSetPropertyException(“Order Total is less then $49. Please review”, PXErrorLevel.Warning));            
        }