Price Levels

Is there a way to access price levels from a script? I am trying to assign a price level to a customer based on the partner they are associated with. I have 2 problems:

1) I can't seem to create a custom field for partners of type price list
2) I can't access the price list from a script. Below is the code trying to access the price list:

 // filter out all customer records that don't have the promo code value from the sales order  var filters = new Array();  filters[0] = new nlobjSearchFilter('name', null, 'is', custentitypricelevel);  var searchresults = nlapiSearchRecord('pricelevel', null, filters, null);