use strict;
use warnings;
use YAML;

my $yamlStr = <<YAML;
---
flamencoArgs:
  spec:
    PAGE_HEADING: SABER Software Requirements Oct Release
    PAGE_TITLE: SABER Requirements
topArgs:
  fileReadFn: eat_AvionicsFMEA
  hiliteCol:
    - 1
    - 3
    - 4
    - 5
  xtraTh:
    1:
      colspan: 2
      text: ' '
    3:
      colspan: 4
      text: Front
YAML

my $stuff = bless YAML::Load($yamlStr);
my $fn = $stuff->can ($stuff->{topArgs}{fileReadFn});

$fn->() if $fn;

sub eat_AvionicsFMEA {
    print "Hey, how about that!\n";
}

##</code><code>##

Hey, how about that!