Unsupported parameter type in @future Method Using Trigger

Hi, Guys you can't pass Sobjects as parameters into asynchronous methods. "Methods with the future annotation cannot take sObjects or objects as arguments." You can pass a list or set of ID's and then query for the objects inside the method.

Trigger

trigger test on Book__c (before Update) {
    if(Trigger.isUpdate){
        LIST<String> myOldObjectststId = new LIST<String>();
        LIST<String> myNewObjectststId = new LIST<String>();
        
        Set<String> opportunitysalesids = new Set<String> ();        

        for (Book__c  b1 : [Select Id from Book__c where id in :Trigger.old]) { 
           myOldObjectststId.add(b1.id);         
        }
        for (Book__c  b2 : [Select Id from Book__c where id in :Trigger.new]) { 
           myNewObjectststId.add(b2.id);         
        }
        MyObjectUpdateAfter.testMethodFuture(myOldObjectststId ,myNewObjectststId );
    }
}

Class with Future Method

public class MyObjectUpdateAfter{
    @future
    public static void testMethodFuture(LIST<String> myOldObjectstst,LIST<String> myNewObjectstst){
        //Now use these Id of  myOldObjectstst & myNewObjectstst

    }
}