collision detection

[Altaiar]

collision detection didnt work in example scene in unity 2020.2.6f1 i using HDRP i replaced materials so they work with HDRP i didnt test it with URP maybe its only a problem for HDRP grass are animated only thing not working is they dont react to collision it Got Fixed when i changed the Position Graph in Object Push Grass and changed it Space attribute to Absolute World i dont know what im doing im beginner in shader graph it is a proper fix? it dont work in my own scene XD if i make a prefab from the sphere in example scene it works but when i crated a sphere and add that player pos script it didnt work i checked both of them had collider and script any other thing it need to work for collision? idk why it wont work