window.intercom("update") not working

[Reenagrg100]

Hi, I'm using the intercom for my react application and I have a use case where I want to update some parameter whenever a user is logged in.
I'm using the following steps:-

1. on app start:-
   window.intercomSettings = {
   app_id: INTERCOM_APP_ID
   }

2. Then on login:-

    	await window.Intercom("boot", {
    		user_id: response.user_state?.externalKey
    	})
   
    	await window.Intercom("trackEvent", "test1")
   
    	await window.Intercom("update", {
    		user_id: response.user_state?.externalKey,
    		custom_attributes: {
    			loggedInVia: "web"
    		}
    	})
   

Doing the following steps:-

However, my event "test1" is being logged on intercom with the corresponding user ( with which I logged in ).
It means "boot" is working fine.

But in the next line when I'm trying to update the "loggedinVia" attribute it's not getting updated.