HI All,

I am struggling with updation os one task record based on other task......

here is
i have task1 and task2.

task 1 is related to account and task2 is related to custom object

here we have on common field in task call accid.
in accid we have account id in both tasks.

here my requirment is to task2 when i am going to update task1............

Please Can anyone suggest me it's urgent 

I have developed the below code

trigger TaskAU on Task (before update)
{
    set<string> vProjAccId = new set<string>();
   
    for(Task t : trigger.new)
    {
        vProjAccId.add(t.ProjectAccountIDs__c);
       
        system.debug('---------------->'+vProjAccId);
    }
   
    list<Task> vLstTask = [SELECT Id,ProjectAccountIDs__c,ActivityDate,Priority,Status,Subject,OwnerId FROM Task
                        where ProjectAccountIDs__c IN : vProjAccId];
      system.debug('=============>'+vLstTask.size());
   // Task vTask;   
   
   // list<task> vLstTasks = new list<task>();               
    for(Task tas : trigger.new)
    {
       system.debug('################'+tas);
        //vTask = trigger.oldMap.get9tas.id);
        for(Task vTas : vLstTask)
        {
         
           if(vTas.ProjectAccountIDs__c == tas.ProjectAccountIDs__c)
           {
              vTas.ActivityDate = tas.ActivityDate;
              vTas.Priority = tas.Priority;
              vTas.Status = tas.Status;
              vTas.Subject = tas.Subject ;
             
              system.debug('@@@@@@@@@@@@@@@@@@@@'+vTas);
            
           }
            //vLstTasks.add(vTas);
        }//system.debug('@@@@@@@@@@@@@@@@@@@@'+vLstTask);
    }
   
    //update vLstTask;
    
}