Hi
Yes, you can do that using PageExtension object.
Here's a sample code:
pageextension 50100 MyExtension extends "Customer List"
{
actions
{
addafter("&Customer")
{
action(NoSeries)
{
ApplicationArea = all;
Image = NewProperties;
Caption = 'New Action';
RunObject = codeunit 50103;
}
}
modify("C&ontact")
{
trigger OnAfterAction()
begin
Message('New Logic goes here');
end;
}
}
}