With Raycast, I can find out if an object is at a position, but how do I communicate?

Unity Engine
1 
 if (Physics.Raycast (Vector3(transform.position.x-1.25,transform.position.y,transform.position.z), up, 2))

with this code, I am able to detect if an object is at a position, but I want to be able to communicate to that object with a function like SendMessage, however, I cannot find out how to obtain this objects ID, how might I do this?

2

Raycast

Use the one with hitinfo. (You’ll want to click the RaycastHit link in there to see what all you can access)