Crystal Reports referencing an array variable value in a formula

Message

     I have a situation where I want to populate and array variable in one formula then reference in another formula so I can print it.

When I try to do this, I get the following message when running the case:
'subscript must be between 1 and the size of the array' 

The example is:

1st Formula - PopulateArray

  Global StringVar Array FootNotes := ['','','','','',''];
  FootNotes[1] = 'yaddi yaddi'

2nd Formula - Footnote1

  Global StringVar Array FootNotes ;
  FootNotes[1] 

BTW, the 1st formula is on the report above the 2nd formula.