Step 1: Adding a Condition

To implement a transition from the OnHold workflow state to the ReadyForAssignment or PendingPayment workflow state, based on the properties of the current repair work order, you need to define a condition that is true when a repair work order requires prepayment. You will use the logical NOT C# operator and this condition to define a condition that is true when a repair work order does not require prepayment.

A repair work order requires prepayment when the service specified for the order requires prepayment. The service requires prepayment if the Prepayment check box is selected for the service on the Repair Services (RS201000) form. This means that to check whether a repair work order requires prepayment, you need to check the value of the prepayment property of the RSSVRepairService DAC record, which has the same serviceID value as the repair work order.

To declare the condition, do the following:

In the RSSVWorkOrderEntry_Workflow class, add the Conditions region.
In the Conditions region, declare a condition class, as the following code shows.
```
        public class Conditions : Condition.Pack
        {
        }
```
In the Conditions class, declare a condition that is true when the repair work order requires prepayment, as the following code shows.
```
            public Condition RequiresPrepayment => GetOrCreate(condition => 
                condition.FromBql<Where<RSSVRepairService.prepayment
                    .FromSelectorOf<RSSVWorkOrder.serviceID>.IsEqual<True>>>());
```
In the code above, you have created a condition by calling the GetOrCreate method and provided a BQL statement in the lambda expression. In the BQL statement, you have selected the RSSVRepairService record by using the RSSVWorkOrder.serviceID value and checked whether the RSSVRepairService.prepayment value of this record equals true.

In the static Configure method, create an instance of the Conditions class, as the following code shows.

            // Create an instance of the Conditions class
            var conditions = context.Conditions.GetPack<Conditions>();

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