changing verticies on cylinder

I’m trying to change the number of verticies on a cylinder and I thought you could do it by pressing F6 but it just gives me this little message that says “toggle editmode” and it says that in both edit and object mode. Is there another way to do that without starting over with the cylinder?

EDIT: now sometimes i get a thing that says select or deselect all and it says action with a drop down, but still not the box that allows me to change things

Blender does not use parametric objects. After you have accepted the settings when you have added an object you cannot go back and change them later on.

that’s dumb… but I saw someone do it in a tutorial video :confused:

You can change them right after you add it with F6 or the operators panel.