TD next - Community

Hi,

I'm traying to do a function that control callback from sigfox. I'm using SmartEverything. How can i do?
I try to do it with arduino software and when i put the function:
TD_SIGFOX_DOWNLINK_SetUserCallback(downlink_callback);
Arduino says me that he can't understand TD_SIGFOX_DOWNLINK_SetUserCallback.

Thank you in advance.

SmartEverything is not using a TD Next Sigfox module, so we cannot help.