When my ex-husband retires do I automatically get a check from the pension what do I have to submit papers how to go bout it

My ex-husband soon to retire this month and he wants me to not collect money directly from the pension but from him personally would you think that to be a good idea or should I just leave it as the court order from his pension and another question if my ex happens to pass away do I still received his pension or does that stops thank you.