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Execute a delegate only once

if($Context->SelfUrl == 'comments.php'){ function Render_CommentImage (&$CommentGrid) { $Comment = &$CommentGrid->DelegateParameters['Comment']; $Comment->Body = '<div>IMAGE</div>' . $Comment->Body; } $Context->AddToDelegate('CommentGrid', 'PostCommentOptionsRender', 'Render_CommentImage'); }
I want this delegate to run just once for the very first comment, and never run again

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