How can I get the specific value from the fields in firestore database no callback?

[itsjohndavea]

void listenerFirebaseLockStatus(){
String devicePath = "device/testDocID";
Docs.get(aClient, Firestore::Parent(FIREBASE_PROJECT_ID), devicePath, GetDocumentOptions(DocumentMask("isLocked")), aResult_no_callback);
//i dont know to call here, how can I get the specific value in isLocked fields?
if(isLocked == true){
digitalWrite(RELAY_PIN, HIGH);
}else{
digitalWrite(RELAY_PIN, LOW);
}
}

here I want to have listener from firestore, to lock and unlocked. and I don't see any example of direct read the value of the fields sorry I'm pure beginner. Thank!

[mobizt]

What you requested in Firestore does not support by REST API.

You should use Realtime database instead.

[itsjohndavea]

Sadly my client can't afford this realtime database feature. but yeah thanks for the response!