Dynamics NAV - Codeunit Extension

• You cannot modify or extend an existing codeunit
• You can create an entirely new codeunit
• You can build subscriber functions that use existing publisher functions
• Ensure you have compiled all objects in NAV
• AL:Download Symbols to update VSCode with object names from NAV
• 
  
• tcodeunit = new codeunit structure
• tprocedure = new method structure
• Define Eventsubscriber trigger event (find details in development environment)
• Define procedure to accept any parameters coming from the publisher
• define vars
• define code

codeunit 50100 ExtToolbox

{

trigger OnRun()

begin

end;

var

myInt: Integer;

[EventSubscriber(ObjectType::Page, Page::"Customer Card", 'OnAfterValidateEvent', 'Address', true, true)]

procedure ChangeMessage(var Rec: Record Customer; var xRec: Record Customer)

var

msg: Text[30];

msg2: Text[30];

begin

msg := xRec.Address;

msg2 := Rec.Address;

Message('Old Value:' + msg + ' | New Value: ' + msg2);

end;

}