YAJLGEN and Supposedly Simple JSON

I'm probably missing something super simple because I've used YAJLGEN to aid in creating process of DATA-INTO on some super complicated.

Below is the code generated by YAJLGEN and it looks OK to the eye, but then the compiler obviously doesn't like num_jsonDoc 'outside' of the data structure.

Also below is a sample message used to generate the data structure. Any ideas how to tweak to get this working? Thanks!

==================================================
num_jsonDoc int(10) inz(0);
dcl-ds jsonDoc qualified dim(3);
ID varchar(9) inz('');
LASTUPDATETIME varchar(20) inz('');
end-ds;
=================================================

[
{
"id": "420319359",
"lastUpdateTime": "2021-05-27T17:37:14Z"
},
{
"id": "42I0187208",
"lastUpdateTime": "2021-04-22T18:41:58Z"
},
{
"id": "42I0187209",
"lastUpdateTime": "2021-04-22T18:41:59Z"
}
]

===================================================
data-into jsonDoc %DATA( ifsPathname
: 'doc=file case=convert countprefix=num_')
%PARSER( 'YAJLINTO'
: '{ "document_name": "jsonDoc", +
"number_prefix": "YAJL_" }');