linking dataSet and dataElement in dhis2.25 and greater

Support - Assistance technique
1

I’m upgrading an app that was using the api to link dhis2 dataElement to dataSet
It was previously trivial, but with addition of the dataSetElements it looks more complicated.

the api

https://play.dhis2.org/demo/api/dataSets/VTdjfLXXmoi

return a non existing resource href

https://play.dhis2.org/demo/api/dataSetElements/kW1vJMSDEHc

how can I add a dataSetElements to that dataSet ?

let’s say : https://play.dhis2.org/demo/api/dataElements/Usk9Asj5DED

How would the curl and payload command looks like ?

thanks

Stéphan