1985 Other Mini Models BLEEDING BRAKES

I FOUND A LEAKING WHEEL CYLINDER ON NEARSIDE REAR, AND DECIDED TO REPLACE THE THE RUBBER SEALS ON THE PLUNGER INSIDE THE CYLINDER, THE CAR WAS ON LEVEL GROUND AND JACKED UP AT THE BACK POINTING THE FRONT DOWN. NORMALLY WHEN IVE ONLY DONE WORK OF THIS KIND ON ONE WHEEL IVE FOUND IVE ONLY NEEDED TO BLEED THAT WHEEL. THERE WAS SUFFICIENT FLUID IN THE RESERVOIR, AFTER BLEEDINGTHE AIR OUT BY MEANS OF JUST GRAVITY INTO A JAR THOUGHT THAT WOULD DO THE TRICK, BUT FOUND NO BRAKE AT THE PEDDLE. THOUGHT ODD. STILL PLENTY OF FLUID IN RESERVOIR. PROCEDED TO BLEED EVERY WHEEL UNTIL CLEAN FLUID RAN CLEAN FROM EACH WHEEL. EVEN BLED OPPOSITES FRONT/BACK IN SEQUENCE AND BOTHBACKS THAN BOTH FRONTS IN PAIRS. STILL NO BRAKE AT PEDDLE. IM STUMPED. BEFORE I DECIDED TO CHANGE THE LEAKY CYLINDER MY BRAKES WHERE FINE, NO SPONGY NO PROBLEM, JUST A MAINTENANCE JOB I THOUGHT. WHAT AM DOING WRONG. BILL