How in OnDrag to make it possible to move an object not all over the screen, but only up and down (Unity3d, C#)?

Question

Game development

With public void OnDrag(PointerEventData eventData)
{
transform.position = eventData.pointerCurrentRaycast.screenPosition;
}
the object will move all over the screen, but only up and down. Tell me how to do it?

Answer 1

Change only a component in the transformy