COBOL Question

Hi Gurus,
        Please excuse me for this question , but I'm a total stranger to
COBOL/400. 
I have 4 logicals in my program & depending on some conditions either of
them should be used to load my subfile. What I want to know is if I can
select one of the files so that all the subsequent moves from the file
fields to screen fields are effected as moves from the particular
logical file. I guess I want to define a generic name which will take
the value of a particular logical based on the conditions.

Obviously I'm trying to avoid code like this -
        If condition1 then
                Move from logical1 fields to subfile fields
        else if condition2 then
                Move from logical2 fields to subfile fields
        else if condition3 then
                Move from logical3 fields to subfile fields 
        else if condition4 then
                Move from logical4 fields to subfile fields
        Endif 

 I'm looking for some solution like this -
        If condition1 then
                Select logical1 
        else if condition2 then
                Select logical2
        else if condition3 then
                Select logical3
        else if condition4 then
                Select logical4
      Endif 
        Move file fields to subfile fields      


Is it possible? If so how?
Thanks

Varma MVN
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