Maximun distance for interacting with object

Unity Engine
1

I have been trying to create an area around an object that you have to be in order to interact (click, highlight) an object.

I have messed around with Vecor3.Distance and thought I was on the right path and it never seemed to work.

If anyone can help point me in the right direction. Id appreciate it.

2

It would be helpful if you post what you have already tried.

if(Vector3.Distance(obj1.transform.position, obj2.transform.position) < 10)
{
   //Do something while object is inside a range of 10 units
}
3

That code gave me an error for the unknown identifiers obj1 and obj2

Im not sure how to embed a code box like that but ive tried

var other : Transform;
if (other) {
var dist = Vector3.Distance(other.position, transform.position);
print ("Distance to other: " + .023);
}

and a couple more to that extent.

I have a highlight code for the object as well that I want to only be active if inside that certain range area.

4

It would be like this

var obj1 : Transform;
var obj2 : Transform;

if(Vector3.Distance(obj1.transform.position, obj2.transform.position) < 10)
{
   //Do something while object is inside a range of 10 units
}
5

would I but that on the object or controller?

Sorry ive been trying to figure out scripting and which object should use what