I replaced the cylinder but I have no clutch release at all,ican sit and pump the pedal and nothing happends

Did you properly bleed the new cylinder? I don't have the greatest equipment so bleeding for me is a two person job.

You obviously have air in the system. Try opening the bleeder screw, pushing the clutch to the floor, and filling the clutch master cylinder reservoir with brake fluid until it flows out. Then, close off the bleeder screw, cap off the reservoir, making sure not to overfill it, and try the clutch pedal. I use a Cal-Van Economy One Man Bleeder to bleed my clutch and brakes.