Cruz is working second ballot. He is dead first ballot. Trump will get 1273 so Cruz’s efforts will be wasted.
You keep saying “1273.”
I do not think that means what you think it means.
Try 1237.
No candidate is likely to gain that many delegates. After the first vote, the delegates are likely to select Cruz. That’s probably how it’s going to play out, according to the long-established rules. No “stealing” votes. Just working within the system.