Unable to find a FormatCondition by TAG

Hello,

I'm setting the TAG property so I can check the existence of a FormatCondition by the TAG which is one of the overloads in the FormatConditions method. I've tried several variations of this code but cannot seem to get the Dim cond= line to ever be "not nothing" i.e. found the condition by the tag property. Please verify and see if this is a bug. Thank you.

    Private Sub CreateUserFormatConditions()
        If Not My.Settings.HighlightLowActivityUsers Then
            Return
        End If
        If Not HasLowActivityFormatCondition() Then
            Dim inactiveUserCondition As New DevExpress.XtraTreeList.StyleFormatConditions.StyleFormatCondition
            With inactiveUserCondition
                .Appearance.ForeColor = System.Drawing.Color.Red
                .Appearance.Options.UseForeColor = True
                .ApplyToRow = True
                .Column = Me.colLastLoginUtc
                .Condition = DevExpress.XtraGrid.FormatConditionEnum.LessOrEqual
                .Value1 = DateTime.Now.AddDays(-60)
                .Tag = "activitymonitor"
                Me.treeUsers.FormatConditions.AddRange(New DevExpress.XtraTreeList.StyleFormatConditions.StyleFormatCondition() {inactiveUserCondition})
            End With
        End If
    End Sub

    Private Sub RemoveUserFormatConditions()
        If HasLowActivityFormatCondition() Then
            Dim cond = treeUsers.FormatConditions("activitymonitor")
            treeUsers.FormatConditions.Remove(cond)
        End If
    End Sub

    Private Function HasLowActivityFormatCondition() As Boolean
        Dim cond = treeUsers.FormatConditions("activitymonitor") '<---this is what is not working, it's always NOTHING
        Return (cond IsNot Nothing)
        'Return (treeUsers.FormatConditions.Count > 1)
    End Function