[question] priority n+101 handling in .ael

Asterisk Asterisk Support
1

Hello

Background:
i want to make test if file on hdd exist.
i want to have all code in extensions.ael
but:
from wiki - bash script :
voip-info.org/wiki/view/Aste … eexistance

#!/bin/bash 
#Test for the existance of files based on shell globbing patterns 
for a in $1; 
 do 
  if  [ -f $a ]  ; then 
 # there are one or more files that match; 
 exit;
 else 
 # there aren't any files that match; 
 exit 1;
  fi;
 done;

this is very good in extensions.conf:

[macro-testfile]
exten => s,1,system(${bash_dir}/file_test ${file_o_dir}/o_${ARG1}.sln) 
exten => s,2,Set(ISTHERE=yes)
exten => s,102,Set(ISTHERE=no)

but i want it in extensions.ael, but don’t know how to handle this n+101 … for now it’s like this:

context incoming {
    s	=>	{
        answer;
        set(CDR(userfield)=${CALLERIDNUM});
    begin:
        background(${menu}/welcome);
        for (i=0; ${i} < 20; i=${i}+1 ) {
        &testfile(${i});
        if ("${ISFILE}" = "yes" )
        {
        background(${file_o}/o_${i});
        background(${digit_dir}/${i});
        }
        else
        noop(-nop-);
				         };
	goto begin;
	        };
    _X.	=>	{
	set(FILE=${EXTEN});
	goto(file|play);
		};
    i	=>	{
	goto(s|begin);
		};
    file	=>	{
	noop(file - ${file} );
    play:
	background(${title_dir}/${FILE}_t);
	background(${file_dir}/${FILE});
	goto(s|begin);
		        };

it’s working.
asterisk allow to mix ael, regular extensions.conf and realtime extensions together in one.
i tried to make VARIABLE=${system(${bash_dir}/file_test ${file_o_dir}/o_${i}.sln)} but it always returns 0

main question:
Does anyone know how to handle n+101 priority in ael ?
Mayby someone have some optimalization to my dialplan ?

My thanks in advance
-FD