Just do the following, this is what we call a nested if statement.

if code = "A"
if ag e=> 55 and age < 65
Valid Statement
Else
if age => 65 and age < 74
Valid Statement
Else
if age > 75
Valid Statement
else
if age < 55
Valid Statement
endif
endif
endif
Endif
Else
Valid statement for case B
Endif


Just want to help and want to have more programmer friend. :>)