Node thingspeak42 not working

Hello. I have a flow for testing communication from Node-Red to Thingspeak. With simple node is working but I want to send more fields at a time an avoid the 15 s delay in Thingspeak. I have tried several things but node timer never starts. Maybe is something related with the ingoing message type, maybe it is my English and I do not understant instructions, maybe I am a begginer, but I do no know what could be. Frustrating. Does anybody have a simple example that runs and share it with me? I will change API key. Just to send data, nothing more. I want to find what I am doing wrong. Thanks.