Search Opportunities by specific STATUS

@operator

Hi, I'm trying to search for Opportunities on a specific status, but an error is ocurring.   I'm not sure witch value has to be sended on

status.searchValue = new string[] { _OPORTUNITY_STATUS }; (see below)




The code I'm using is the following:
private const string _OPORTUNITY_STATUS = "13";


public List<string> ReadOportunities()
        {
          
            List<string> oportunityNames = new List<string>();

            OpportunitySearch searchBuffer = new OpportunitySearch();
            OpportunitySearchBasic searchBasicBuffer = new OpportunitySearchBasic();

            SearchEnumMultiSelectField status = new SearchEnumMultiSelectField();
            status.@operator = SearchEnumMultiSelectFieldOperator.anyOf;
            status.operatorSpecified = true;
            status.searchValue = new string[] { _OPORTUNITY_STATUS };
           
            searchBasicBuffer.status = status;

            searchBuffer.basic = searchBasicBuffer;

            SearchResult response = this.Service.search(searchBuffer);

            if (response.status.isSuccess)