Candle

Hy, I am new in blender .
In my first tutorial from “gryllus.net” i am making the candle.
At one point i have to go to front vieuw and move the vértices down along the Z axis.
I have tried everything but it onley moves in the x axis.
What can be the problema ?
Kind regards
Alikianos

Select the vertex or verticies you want to move press G then Z. Your movement will be restricted to the Z axis.