mouse position not updating

Question

i need to make the players x to be the same as the mouse' x so i use:
var mousex = getviewpoint().getmouseposition ().x
setposition (Vector2(mouse_x, y))
but it doesn't work
thanks in advance
ps i already have a var for y

Comments

Could you tell what happens?

Btw., it's called get_viewport(). Also you can set most positions by simply assigning the value: self.position = Vector2(mouse_x, y).