[
[%- FOR adv IN advdb.sorted -%]
[% USE advid = String(basename.ID(adv)) -%]
[% IF advid.search('^MGASA-') -%]
[%- "," IF gotone %]
{"id": "[% basename.ID(adv) %]"}
[%- SET gotone = 1 %]
[%- END %]
[%- END %]
]