public interface ILocalVariable 

// get local variable
ILocalVariable lv = project.Variables["VariableName"];
 
// get comment for current local variable
string comment = lv.Comment;
// if value is empty then set comment for local variable
if (String.IsNullOrWhiteSpace(comment)) lv.Comment = "Set the comment for this local variable";
 
// get name of local variable
string name = lv.Name;
// get group of local variable
string @group = lv.Group.ToString();
// get value of local variable
object value = lv.Value;
 
// show message about variable
System.Windows.Forms.MessageBox.Show(String.Format("Local variable: value is {0}; comment {1}", value, comment), 
        String.Format("Information about variable {0} from group {1}", name, @group));

// get local variable
$lv = $project->Variables->get_Item("VariableName");
 
// get comment for current local variable
$comment = $lv->Comment;
// if value is empty then set comment for local variable
if (String::IsNullOrWhiteSpace($comment)) $lv->Comment = "Set the comment for this local variable";
 
// get name of local variable
$name = $lv->Name;
// get group of local variable
$group = $lv->Group->ToString();
// get value of local variable
$value = $lv->Value;
 
// show message about variable
System\Windows\Forms\MessageBox::Show(String::Format("Local variable: value is {0}; comment {1}", $value, $comment), 
        String::Format("Information about variable {0} from group {1}", $name, $group));