I have defined a Push Template with some smart text in the message body and a Button Options. I want to deliver notifications just to a selected devices using this template, and I want to put a custom header on it to be retrieved later in the activity associated to the button (the value of the header will be an objectId of a register in a custom table).
How can I deliver notifications using this template via API?
I have seen there are to methods signature for Backendless.Messaging.pushWithTemplate. One of them receives a Map as second argument.
Where do I put the query for the selected devices?
Where do I put the value of the custom header?