LAUNCHXL-F28379D: VREFHI pin on launchpad for implementing DAC

Hello, I tried modifying the example code to use VREFHI also for VREHI, the MCU must have 5V thus is have connected the jumper accordingly. 

While using DACOUTB (through example code) at pin 70 of launchXL-F28379D, I am not able to receive any output. But, I am able to receive output from DACOUTA (after switching to DACA_BASE in the example code)

What can be the reason for DACOUTB not working.

//#############################################################################
//
// FILE:   buffdac_ex1_enable.c
//
// TITLE:   Buffered DAC Enable Output Example
//
//! \addtogroup driver_example_list
//! <h1> Buffered DAC Enable </h1>
//!
//! This example generates a voltage on the buffered DAC output,
//! DACOUTA/ADCINA0 and uses the default DAC reference setting of
//! VDAC.
//!
//! \b External \b Connections \n
//!  - When the DAC reference is set to VDAC, an external reference voltage
//!    must be applied to the VDAC pin. This can be accomplished by connecting a
//!    jumper wire from 3.3V to ADCINB0.
//!
//! \b Watch \b Variables \n
//!  - None.
//!
//
//#############################################################################
//
// $Release Date:  $
// $Copyright:
// Copyright (C) 2013-2021 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
//   Redistributions of source code must retain the above copyright 
//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the 
//   documentation and/or other materials provided with the   
//   distribution.
// 
//   Neither the name of Texas Instruments Incorporated nor the names of
//   its contributors may be used to endorse or promote products derived
//   from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//#############################################################################

//
// Included Files
//
#include "driverlib.h"
#include "device.h"

//
// Globals
//
uint16_t dacVal = 706;

//
// Function Prototypes
//
void configureDAC(void);

//
// Main
//
void main(void)
{
    //
    // Initialize device clock and peripherals
    //
    Device_init();

    //
    // Initialize PIE and clear PIE registers. Disables CPU interrupts.
    //
    Interrupt_initModule();

    //
    // Initialize the PIE vector table with pointers to the shell Interrupt
    // Service Routines (ISR).
    //
    Interrupt_initVectorTable();

    //
    // Configure the DAC module
    //
    configureDAC();

    //
    // Continuously set the DAC output value
    //
    while(1)
    {
        DAC_setShadowValue(DACB_BASE, dacVal);
        DEVICE_DELAY_US(2);
    }
}

//
// Configure DAC - Setup the reference voltage and output value for the DAC
//
void
configureDAC(void)
{
    //
    // Set VDAC as the DAC reference voltage.
    // Edit here to use ADC VREF as the reference voltage.
    //
    DAC_setReferenceVoltage(DACB_BASE, DAC_REF_ADC_VREFHI);

    //
    // Enable the DAC output
    //
    DAC_enableOutput(DACB_BASE);

    //
    // Set the DAC shadow output to 0
    //
    DAC_setShadowValue(DACB_BASE, 0);

    //
    // Delay for buffered DAC to power up
    //
    DEVICE_DELAY_US(10);
}

//
// End of File
//

Thank you