Forms :: Main Form With 2 Subforms Fails To Open Current Record

I have a main form "frmDriverNoticeRecord" with 2 subforms, "frmSubDriverNotice" and "frmSubVehicleRecord"..The main form uses "IncidentID" as the PK. Each form stores data in its own table. The tables are related via IncidentID and there is a 1-many relationship between tblIncident (main) and tblDN (sub) and tblVehicle (sub).

I have a form "frmIncidentLog" displaying records in a table view with a few fields for quick reference and to allow selection of a single record for detailed viewing. I created a command button with the intent to open the "frmDriverNoticeRecord" at the current record. The main form and child link fields appear to be linked correctly; i.e. IncidentID on all three. If I open the form manually it opens and I can use it and search and filter as I want. If I try to open it via the command button It opens a small window asking for the IncidenID, when I enter theIncidentID number, it opens the form to the first record every time.Here is the code:

Private Sub comOpenDR_Click()

Dim frmName As String
Dim recID As String
frmName = "frmDriverNoticeRecord"
recID = "[IncidentID]=" & Me![IncidentID]
DoCmd.OpenForm frmName, , , recID
End Sub

I tried running the the DoCmd.OpenForm command directly from the button using the where condition (in various manners) with the same results.