adobe brackets - Emmet custom snippet -

i trying code custom snippet emmet, , not getting result want. trying output this:

<perch:every count=" "></perch:every> 

with cursor between quote marks , between tags. how go this? need abbreviation rather snippet?

i have far:

{ "html": { "abbreviations": {     "perchafter":"<perch:after>",     "perchbefore":"<perch:before>"     },    "snippets": {     "perchcontent": "<?php perch_content('|'); ?>"     "perchevery": "<perch:every count="|"></perch:every>" }     } }