Dual motor setup over CAN with UART

Hello,

I have problem wit sorting out how CAN Bus is working in VESC. I'm trying to controll current and brake current in both VESCs connected with CAN magistral. 
Master (device with connected receiver)  VESC Tool Setup looks like this:

Slave VESC Tool Setup looks like this:

For example COMM_SET_CURRENT message for Master device looks like this:

And for Slave device like this:

These messages are sended one after another. Unfortunately VESCs are not responding for this messages so I suppose that message payload is incorrect. Have you any suggestions what I'm doing wrong?

This is how the source code looks like, for both: COMM_SET_CURRENT, COMM_SET_CURRENT_BRAKE messages:

void VescUartSetCurrent(ble_nus_c_t* p_ble_nus_c, float current, short address) {
	int32_t index = 0;
	uint8_t payload[7];
	
	payload[index++] = COMM_FORWARD_CAN ;
	payload[index++] = address ;
	payload[index++] = COMM_SET_CURRENT ;
	buffer_append_int32(payload, (int32_t)(current * 1000), &index);
	PackSendPayload(p_ble_nus_c, payload, 7);
}

void VescUartSetCurrentBrake(ble_nus_c_t* p_ble_nus_c, float brakeCurrent, short address) {
	int32_t index = 0;
	uint8_t payload[7];
	
	payload[index++] = COMM_FORWARD_CAN ;
	payload[index++] = address ;
	payload[index++] = COMM_SET_CURRENT_BRAKE;
	buffer_append_int32(payload, (int32_t)(brakeCurrent * 1000), &index);
	PackSendPayload(p_ble_nus_c, payload, 7);
}

I'll be appreciate for any help...