overlayCircle not working

Questions & Answers
1

my physics2D.OverlayCircle doesnt want to work and i dont know why.

this is my code:
Collider2D colliders = Physics2D.OverlapCircle(transform.position, 10,layer);

it says: cannot implicitly convert type “unityEngine.collider2D” to “unityEngine.collider2D”

please help

2

check this:

3

Thank you!!