Readability of dialplan statement continue on the next config line

Asterisk Asterisk Dialplan
1

Try to backslash the linefeed to get a dialplan statement continue on the next line to make long statements more readable.
Like in a bash script. But this does not work.

Example:

same => n,Set(API-GET1=\

“{‘DNIS’: ‘{CALLERID(dnid)}','ANI': '{CALLERID(num)}’,‘LineID’: ‘${CHANNEL}’}”)

Is there a way to realise it.