Hi brosseau,

yup... I just clicked on an object in the history, then the attributes appear in the bottom, and then there I clicked on the attribute I wanted to keyframe, and rightclicked, and chose "key selected"...

I have found the file and attached it...

btw. maybe you can use these scripts, or get some ideas from them...
distributeOnCurve by Edvard Toth...
nthd_extrude by Cory Clarke...
zgExtrudeWin by zach grachan...

regards

Strarup