====Substitutions====

It is possible to use data from your [[frame|frame]] in certain layer properties. For example, the query in the [[get_query|get_query]] layer, or the URL in the [[get_api|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...

<code>
http://this.isa.test/api_endpoint?after={StartTime}
</code>

...will replace '{StartTime}' with the current start time of the frame (in YYYY-MM-DD HH:MM:SS format).