Passing parameters by reference

Sometimes, we may want our function to modify multiple values. As we can't return more than one value from a function (unless we use an array), it can be beneficial to pass our parameters by reference to the function.

How to do it...

1. Let's get started by creating a new codeunit from Object Designer.

2. Add the following global variables:

   Name	Type	SubType	Length
   CustomerRec	Record	Customer
   OldName	Text		50
   NewName	Text		50

3. Then add a function called ChangeCustomerName.

4. The function should take the following parameter:

   Name	Type	SubType
   Customer	Rec	Customer

5. Let's write the following code in the ChangeCustomerName function:

   Customer.Name := 'Changed Name'; 

6. Add another function called ChangeCustomerNameRef.

7. The function should take the following parameter:

   Name	Type	SubType
   Customer	Rec	Customer

8. Place a check mark in the Var column for the parameter.

9. Write the following code in the ChangeCustomerNameRef function:

   Customer.Name := 'Changed...