Reading 32-bit SPI data using 16-bit processor (dsPIC)

Question

I am interfacing a M90E32AS energy meter IC with dsPIC33F series processor. I successfully read voltage and current values. I try to read power values also, as per the datasheet the power registers are 32-bits wide. I tried the following code to read the 32 bit value but I am unsuccessful. Help me to rectify the error.

int PmB_read()
{
    CS=0;
    SPI2BUF=SBUF=0x80B2;
    while(SPI2STATbits.SPITBF==1){}
    SPI2BUF=0x0;
    
    while(SPI2STATbits.SPITBF==1){}
    delay();
    
    CS=1;
    HiByte = SPI2BUF;
    return HiByte;
}

int PmBLSB_read()
{
    CS=0;
    SPI2BUF=SBUF=0x80C2;
    while(SPI2STATbits.SPITBF==1){}
    SPI2BUF=0x0;
    while(SPI2STATbits.SPITBF==1){}
    delay();
    CS=1;
    LoByte = SPI2BUF;
    TPmB = (HiByte << 16)| LoByte;
    Total = TPmB * 0.00032;
    return Total;
}

Here is the data sheet screen shot for power register