trigger UpdTeamMember on Account_Plan_Team_Member__c (before insert, before update, after update) {


Public string level;

list<account_plan__share> sharerec = new list<account_plan__share>();

list<account_plan_team_member__c> members = new list<account_plan_team_member__c> ();
members.add(trigger.new[0]);

if(trigger.isbefore && trigger.isupdate) 
{
 if(trigger.old[0].ap_access__c <> trigger.new[0].ap_access__c) 
{
    id userid = trigger.new[0].siemens_user__c;
    id parentid = trigger.new[0].account_plan__c;

      for(account_plan__share share : [select accesslevel from account_plan__share where userorgroupid=:userid and parentid=:parentid]) 
      {
        level = trigger.new[0].AP_access__c;
        if(level=='Read Only') {share.accesslevel = 'Read';}
        if(level=='Read / Write') {share.accesslevel = 'Edit';}

        sharerec.add(share);
      }
       update sharerec;
}
}

if(trigger.isbefore && trigger.isinsert) 
{
    id userid = trigger.new[0].siemens_user__c;
    id parentid = trigger.new[0].account_plan__c;

      for(account_plan__share share : [select accesslevel from account_plan__share where userorgroupid=:userid and parentid=:parentid])
      {
        level = trigger.new[0].AP_access__c;
        if(level=='Read Only') {share.accesslevel = 'Read';}
        if(level=='Read / Write') {share.accesslevel = 'Edit';}
         system.debug('---' + share.userorgroupid);

        sharerec.add(share);
       }

   insert sharerec;
}
} // end of trigger