Fantom G with Reaper...no sound in real time

[reder]

Hi .. I would like to make midi sequences with the Fantom G, which is connected to Reaper .... Everything works, recording and play the sound you hear, but when they stopped the play, if I press a few buttons in real time is not hear anything .... I want to know what are the right settings to do on the Fantom G, System, perhaps there is some parameter that is set wrong .... thanks