The Code**

​lastOrder = New_Order[Order_Type == input.Order_Type] sort by Added_Time DESC range from 1 to 1;
info lastOrder.Order_Number;
// type-auto number-year
theYear = Today.getYear();
info theYear;
if(input.Order_Type == "Product")
{
orderType = "P";
}
else if(input.Order_Type == "Service")
{
orderType = "S";
}
else
{
orderType = "PS";
}
if(lastOrder.count() > 0)
{
getSuffixFirstDash = lastOrder.Order_Number.getsuffix("-");
info getSuffixFirstDash;
getNumber = getSuffixFirstDash.getprefix("-");
info getNumber;
newNumber = getNumber.toDecimal() + 1;
info "the new number is: " + newNumber;
input.Order_Number = orderType + "-" + newNumber + "-" + theYear;
}
else
{
input.Order_Number = orderType + "-" + 1 + "-" + theYear;
}