trigger

if (pmrList.size() > 0){
	upsert pmrList;
      
        // find event from eventList that has its id stored in pmr\'s account_c field
	// store pmr id in event\'s pmr id field
        
	for (PM_R_Treatment__c pmr : pmrList){
		for (Event e : eventList){
			if (e.AccountId == pmr.Account__c){
				e.PMRId__c = pmr.Id;
			}
		} // closes event for loop
	 } // closes pmr for loop
      
} // closes the if for pmrList