Insert or Commit Line Item

Hi !

Two issues when trying to create a new opportunity with the default sales rep as the person entering this opportunity:

1. Unable to get my script to commit or insert a line item.
2. Contribution (integer) defaults to 100 though the script tries to insert 5.

//Use this script on "Page Init Function" on an Opportunity Form

function oppDefaultSalesRep(type)

{
     if ( type == 'create')

     var salesrep1 = nlapiGetUser();

     nlapiSetCurrentLineItemValue('salesteam', 'employee', salesrep2);
     nlapiSetCurrentLineItemValue('salesteam', 'salesrole', -2);
     nlapiSetCurrentLineItemValue('salesteam', 'isprimary', 'T');
     nlapiSetCurrentLineItemValue('salesteam', 'contribution', 5);
     nlapiCommitLineItem('salesteam');
  //nlapiInsertLineItem('salesteam');

}

Thanks.
Kumar