I thought about it for a wile, I couldn’t find better solution according to my knowledge

for($i=1;$i<250;$i++)
{
string $is=$i;
string $d;//zeros before the number

if (sizeBytes($is)==1)
$d="00";
else if (sizeBytes($is)==2)
$d="0";
else $d="”;
string $s= $d+$is;
sysFile -delete ("/Users/ship."+$s+".iff")
}