I am building an upload where the end user can upload a csv file and the page parses it and then will input the contents of the file.  The issue I am having is related to products.  One of the fields is a lookup to products.  I have created a list and then put that list into a map so that I can get the ID I need.  The problem I am having is that the map is not returning a result.  I have debuged it a bunch and can take the debug result and put it in and the map returns the result correctly.  

public class RMA_Upload_Ext {

    public boolean sec1 {get;set;}
    public boolean sec2 {get;set;}
    public blob contentFile {get;set;}
    public string nameFile {get;set;}
    public list<String> filelines {get;set;}
    list<OrderLine__c> LineItems {get;set;}
    public OrderLine__c oline {get;set;}
    public map<string, id> prodMap = new map<string, id>();


    public RMA_Upload_Ext(ApexPages.StandardController controller) {
        sec1=true;
        sec2 = false;
        oline = new OrderLine__c();
    }
    
    public void sec1to2(){
        sec1=false;
        sec2=true;
    }


    public pagereference readFile(){
        try{
            nameFile = contentFile.toString();
            filelines = nameFile.split('\n');
        }
        catch (Exception e){
            apexpages.message errormsg = new apexpages.message(apexpages.severity.error, ' File Must be in CSV Formate only ');
            apexpages.addmessage(errormsg);
        }
        LineItems = new list<OrderLine__c>();
        list<product2> pl = [select name, id from Product2 all rows];
        map<string, id> pm = new map<string, id>();
        for(product2 p : pl){
            prodMap.put(p.name, p.id);
        }
        for (integer i=1; i<filelines.size();i++){
            list<string> values = new list<string>();
            values = filelines[i].split(',');
            OrderLine__c o = new OrderLine__c();
            o.ShipToAddress__c=oLine.ShipToAddress__c;
            //id p = pm.get(values[1]);
            o.PartNumber__c = prodMap.get(values[1]);//Here is where the issue is.  I can replace this with 1113135 and it returns the result fine.  
            system.debug('*****'+prodmap);
            system.debug('*****'+values[1]);
            system.debug('*****'+prodMap.get(values[1]));
            system.debug('*****'+o.PartNumber__c);
            o.SerialNo__c = values[0];
        LineItems.add(o);
        }
    system.debug('*****' + lineitems);

    return null;
    }
}

 Help Please. Thanks.