CC2630: TIMAC - When changing the channel, how do I know the operation has been completed?

Part Number: CC2630

Is there a way to get a callback or read some kind of flag indicating that the MAC channel has changed after execution of the following code:

uint8_t channel = 20;
MAC_MlmeSetReq(MAC_LOGICAL_CHANNEL, &channel);

My code is sending messages on the old channel even though I'm tuning the radio to the new channel using the code above prior to sending the message.