Somebody can help me?
I want to record a pitch change, like if i will manipulate it manualy the pitch of an instrument. I don't know as to do it!...

most synths use CONTROL CHANGE messages to change pitch, as a pitch bend. your keyboard may have a wheel or joy stick on the left that transmits controller messages. the two common messages are MODULATION and PITCH. try playing a note, and wiggling those wheels at the same time, you'll get it.

if you've recorded a track with midi notes, it's possible to overdub pitch change controller data over the top. every sequencer handles this a bit differently, but basically, after you've recorded a second pass, you'll see a note lane, and some controller data, either parallel or overlaid. the pitch bend data may be edited separately from the note data.

for more specific help, we'd have to know which synth, keyboard, and sequencer you're using.

good luck! don't be afraid to just try something, it's not brain surgery.

In GarageBand double click your recorded track. The editor opens below. Use the slider to change pitch plus or minus 12 semitones for audio, 36 semitones for midi.

I don't have a sinte I have a keyboard with midi out. I want to transformate the notes (her pich) that I recorded with it that then I transformated it with a MIDI instrument of garageband, and finaly I want to record his pich transition. I want to record the pich change.
I don't know if I explain

Thanks!!!

i wish i could help more. unfortunately, i don't quite understand you. there is a french forum here, perhaps that would be better.
i do recommend asking help with garageband from an experienced teacher in your town. i believe you need to see someone doing this, and then you'll understand.
good luck, and keep making music.