Where is the Edit primitive toolbar windows Disappeared after creating Object

i created new primitive object , once first time i creating it i can see this “Add Cone” window for editing the verticals and such BUT , if i create the cone and then move it , this window is disappearing and i can’t find any where in blender where i can reduce the verticals number ?
here is the window that i can’t find any more after moving the cone after creating it .

You can’t find it because it isn’t there…:wink:
You can only change the parameters of a primitive right after creating it. As soon as you start to change the primitive or move it around, your chance of tweaking the parameters is gone.

You can also make that toolbox appear with the useful shortcut F6 right after creation of the primitive.