Vantage 8.03.403D Search Adapter Examples

Hello group,

I've been banging my head against the wall all day on this one. Does
anybody out there have an example of how to use a search adapter in a
Vantage 8.03.403 customization? Specifically, I am trying to load up a
data set to determine if an employee is currently clocked in. I
thought something like this would work to get the recordset (which I'd
go on to use in my logic to determine if they are clocked in):

Dim labor As LaborAdapter = New LaborAdapter(MESMenu)

Dim MorePages As Boolean

Dim opts As SearchOptions = New SearchOptions(SearchMode.AutoSearch)
opts.NamedSearch.WhereClauses.Add("EmployeeNum", "1234")
opts.NamedSearch.WhereClauses.Add("ActiveTrans", "yes")
Dim results As Data.DataSet = labor.GetRows(opts, MorePages)


...but it keeps hanging up. Am I using those WhereClauses correctly?