[Zword]

The point is that my z coordinate is constantly reset to 0.5 but what i want is that it get the object.getPosition += 0.5

def moveWallBackward ():
    global pos
    object = viz.pick()
    if object.valid():
        pos -= 0.5
        object.setPosition([0,-4,pos])
vizact.onkeydown( 'j', moveWallBackward )