Forms :: How To Set Recordset Or Count To Determine Existing Record In Table

I am very new to VBA and I have been self-learning VBA from two month and have been assigned to new project Work Authorization & Lock Out Tag Out.I have table called tblWA & tblLOTO.Basically most of the LOTO/s are associated with WA #, following example

WA # in tblWA
Associated LOTO/s in tblLOTOs
25258
123456
123457
123458
123459
25259
123410
123411
123412
123413

However, both tables are in relationship right now..I have form called WA Switch Board where I have Datasheet View form with all WA records, fields are WA#, WAStatus, WAIssuedDate, IssuedBy, CompletionDate and etc but I have dropdown with with WAStatus with (In Field Today, On-Hold, In Approval, Cancelled, Close).Now from the main switch board when authorized people try to change the status of permit to Closed I want recordset or count to loop through tblLOTO and give me a message box if associated LOTO/s status not equal to Close.In other word, if the associated LOTO/s are not close then the selected WA # in WA Switch Board cant close.Here is the code I have been playing with no success

Private Sub PermitStatus_AfterUpdate()
Dim db As Database
Dim rs As Recordset
Set db = CurrentDb

[code]....