Substitutions
It is possible to use data from your frame in certain layer properties. For example, the query in the get_query layer, or the URL in the get_api function.
To substitute frame values, use curly brace ({ and }) symbols, along with the name of the attribute you want to add.
For example…
http://this.isa.test/api_endpoint?after={StartTime}
…will replace '{StartTime}' with the current start time of the frame (in YYYY-MM-DD HH:MM:SS format).