rigidbody iskinematic issue

i am trying to create an effect of a time stop but using only iskinematic instead of timescale, i want it to freeze when i press tab but it doesn’t work, here is the script.

function Start () {
GetComponent.().iskinematic = true;

Have you tried Debugging? Cause I am not sure, if “tab” key is by default registered for input. Just go to Edit>Project Settings>Input and check if “tab” key is included in the array. If not simply create a new element in that Input array and put “tab” in it.
Besides that Start( ) is only called once, it will not keep on listening for key input in each frame. So,try and put your code in Update( ) function.
Let me know if this worked or not. @Benjim-Maccabomb