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Is there a specified area that we specify? Programmically?

For example: 

  - record (my_record, {foo = 0, bar = 0}). Modify_record (record, field, value) - & gt; Record # my_record {field = value}   
 so that any  modify_record (#my_record {foo = 1}, bar, 42) , or,  modify_record (Some_method_that_returns_a_my_record () can do something, foo, 3.14)   
 Errors like  some such compilation I   field is not an atom or The record is in my_record   
 I know that there are some examples how to convert to a propellist / but I was hoping something more straightforward.   
 
 If you pass field number (instead of field name) it is possible. Meaning of modify_record phone  
  instead of  
  modify_record (MyRecord, # my_record.foo, 3.14)   
 (MyRecord, foo, 3.14)   
 (# my_record.foo returns the number of Fu fields in the record). In that case your record may be recorded  
  modify_record (r, fieldano, val) - & gt; Setelement (FieldNo, Research, Val)

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