This question has been answered by sriananda. See the first response.
define your configs with the MIGX-configurator - CMP
there is a field, for each field, where you can put configs in.
try
,"configs":"{\"targetRatio\":\"1\"}"
"configs":"{ "targetWidth":"", "targetHeight":"", "targetRatio":"", "thumbnailWidth":"", "allowAltTag":"" }"{"field":"afbeelding","caption":"afbeelding","inputTVtype":"imageplus","configs":"{\"targetRatio\":\"1.6\"}"}
[ed. note: sriananda last edited this post 10 years, 9 months ago.]