Passing parameters by reference

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

How to do it...

1. Create 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. Add a function called ChangeCustomerName.

4. The function should take in the following parameter:

   Name	Type	Subtype
   Customer	Record	Customer

5. Write the following code in the ChangeCustomerName function:

   Customer.Name := 'Changed Name';
   

6. Add a function called ChangeCustomerNameRef.

7. The function should take in the following parameter:

   Name	Type	Subtype
   Customer	Record	Customer

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

9. Write the following code in the ChangeCustomerName function:

   Customer.Name := 'Changed Name';
   

10. Write the following...