Unity3d Physics.Raycast not working ('Physics' does not contain a defenition for 'Raycast')

Question

So this is my code;

void Update()
{
    RaycastHit hit;
    if(Physics.Raycast(transform.position, Vector3.down, 100, out hit))
    {
        //Do something
    }
}

And it is not working. When I do this it will say;

'Physics' does not contain a defenition for 'Raycast'

This script is in a completeley new project in a completeley new script.

Does anybody know the reason behind this?

Answer 1

I think the constructor is wrong. Try swap "100" and "out hit"

if(Physics.Raycast(transform.position, Vector3.down, out hit, 100))