vba excel autofilter failure

[terriertrip]

I have tables to run some calculations where each table is filtered by a list of variables set in sFilter(i). Not all tables have the same variable, so when running my loop, an error is thrown on tables that don't contain a variable in the list. How can I just check if the variable sFilter(i) is nothing or False when:

For i = 1 To 4
  With rng
    .AutoFilter Field:=7, Criteria1:=sFilter(i)
  End With
'code
Next i

[maniacb]

try

For i = 1 To 4
  With rng
    .AutoFilter 
    .AutoFilter Field:=7, Criteria1:=sFilter(i)
  End With
'code
Next i