Requirement:
The user has a need to hide rows based on 2 values. The first value is the trigger Y or N (to hide or not hide), and the second value is if a value in each row is equal to zero. So if the trigger value is Y AND the end value in a row = 0, then hide the row. If the AND test fails, do not hide the row.
The code the user currently has now is:
Option Explicit Private Sub Worksheet_Change(ByVal Target As Range) If Target.Address = "$R$5" Then If Range("R5").Value = "Y" Then 'need the syntax for AND (Column T, Row number). Do next line of code when ($R$5 = Y AND cell (T,rows 9 to 16) =0), then Rows("9:16").EntireRow.Hidden = True ElseIf Range("R5").Value = "N" Then Rows("9:16").EntireRow.Hidden = False End If End If End Sub
https://www.ozgrid.com/forum/forum/help-forums/excel-vba-macros/1201292-hide-rows-based-on-2-values
Solution:
Option Explicit
Private Sub Worksheet_Change(ByVal Target As Range)
    Dim lngMyRow As Long
    With Application
        .ScreenUpdating = False
        .EnableEvents = False
    End With
    If Target.Address = "$R$5" Then
        If Range("R5").Value = "Y" Then
            Rows("9:16").EntireRow.Hidden = False
            For lngMyRow = 16 To 9 Step -1
                If Val(Range("T" & lngMyRow)) = 0 Then 'Also includes blanks
                    Rows(lngMyRow).EntireRow.Hidden = True
                End If
            Next lngMyRow
        ElseIf Range("R5").Value = "N" Then
            Rows("9:16").EntireRow.Hidden = False
        End If
    End If
    
    With Application
        .EnableEvents = True
        .ScreenUpdating = True
    End With
    
End Sub
Obtained from the OzGrid Help Forum.
Solution provided by Trebor76.
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See also:
| How to hide columns in sheet 2 based on data change in sheet 1 | 
| How to hide all rows with a blank or zero | 
| How to hide/unhide rows | 
| How to use VBA code to hide row based on month | 
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