Adobe Analytics Advanced Query Relative Date Help

Hello,

I am having difficulty incorporating the relative date $Yesterday into my JSON query for the Adobe Analytics Advanced - Query connector

{"reportDescription":{
"reportSuiteID":"latamprod",
"dateFrom":"$Yesterday",
"dateTo":"$Yesterday",
"dateGranularity":"Day",
"elements":[
{"top":1000,
"selected":[],
"id":"evar26",
"classification":[],
"name":"Asset ID (v26)"}],
"metrics":[
{"decimals":0,
"id":"cm4992_5aac3be5bd01056bb7968ac1"},
{"decimals":0,
"id":"event51"},
{"decimals":0,
"id":"event52"},
{"decimals":0,
"id":"event53"},
{"decimals":0,
"id":"event54"},
{"decimals":0,
"id":"event55"}],
"segments":[],
"locale":"en_US"}}

It keeps telling me that the query is not a valid JSON string.

Thank you