FIM Problem can not import Multivalue attribute during import

i am trying to do the import for the members attribute for a group using a Extensible Connectivity 2.0 MA to import data from SQL to AD. I have created a schema which contains a multivalued attribute, I would appreciate to help with following:

1- the schema = should be like "schemaType.Attributes.Add(SchemaAttribute.CreateMultiValuedAttribute("Members", Microsoft.MetadirectoryServices.AttributeType.String));" or "SchemaAttribute.CreateMultiValuedAttribute("Member", AttributeType.Reference);"

2- would you provide the sample code of the GetImportEntries(GetImportEntriesRunStep importRunStep) 

Thanks,

Loai K.Dawood