Object Required Error MS Access SQL - sql

Question

I'm stuck in this SQL statement in my VBA coding. I'm trying to complete an update query with an DLookUp but I may not have written the code correctly. Basically I want to WorkerID and Workername to come from the DLookUp from the UserID used to get the data here GetNextAssignee("program", "Language", "username"). I'm getting an object required error here:
"UPDATE CFRRR,attendance SET assignedto = " & GetNextAssignee("program", "Language", "username") & ", assignedby = " & Forms!Supervisor!NavigationSubform!assignedby.Value & ", Dateassigned = #" & Now & "#, actiondate = #" & Now & "#, Workername = " & DLookup(attendance.username, "attendance", "username = UserID") & ", WorkerID = " & DLookup(attendance.userID, "attendance", "WorkerID = UserID") & " WHERE CFRRRID = " & rs!CFRRRID
Here's the full code for context:
Set db = CurrentDb
strSQL = "SELECT CFRRRID, [program], [language] FROM CFRRR WHERE assignedto Is Null"
Set rs = db.OpenRecordset(strSQL, dbOpenDynaset)
If Not rs.BOF And Not rs.EOF Then
While Not rs.EOF
strSQL = "UPDATE CFRRR,attendance SET assignedto = " & GetNextAssignee("program", "Language", "username") & ", assignedby = " & Forms!Supervisor!NavigationSubform!assignedby.Value & ", Dateassigned = #" & Now & "#, actiondate = #" & Now & "#, Workername = " & _
DLookup(attendance.username, "attendance", "username = UserID") & ", WorkerID = " & DLookup(attendance.userID, "attendance", "WorkerID = UserID") & " WHERE CFRRRID = " & rs!CFRRRID
Debug.Print strSQL
db.Execute strSQL, dbFailOnError
rs.MoveNext
Wend
End If
Thank you!

Answer 1

Your DLookup expressions are not correct.
The target field of the DLookup is a string-expression as well. So it should be:
... & DLookup("username", "attendance", "username = UserID") & ...
There are multiple occurances of this error in your SQL.
In addition to that, you should check the criteria expression as well:
..."username = UserID"...
That looks suspicious to me. But I can't tell if it is correct or not without knowing the table and data structure.