Sorry, about this, but my head is sore from pounding on the desk....

Have a handful of check marks that I put on via the Forms Check Box and
want to have a sub that will check/uncheck all of them. However, i
can't even get the basics on this. What am i missing? I keep getting
error messages no matter how I try to tweak...last error is "object
required"

Sub CheckAll_Houses()
With ActiveSheet
CheckBox18.Value = True
CheckBox19.Value = True
CheckBox20.Value = True
CheckBox21.Value = True
CheckBox22.Value = True
End With
End Sub