Wonder if someone could help with this; for (int i = (noOfTriacs - 1); i >= 0; i--) { triacState[i] = TRIAC_OFF; digitalWrite(pinForTrigger[i], triacState[i]); client.publish("Frequency","Frequency [i] off"); } In the last line I'm wanting [i] to be the actual value of i sent.

MQTT client.publish format

UKHeliBob July 18, 2021, 4:59pm 2

Take a look at the sprintf() function

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