Chief Delphi - Battery Voltage variable on EDU controller

I am trying to use the battery_voltage variable in user_routines.c but I get this error when trying to compile..

Error [1205] unknown member 'rc_analog01' in '__tag_167'

Am I missing something?

EDIT

After looking at 'ifi_default.h' i found this block of code..

Code:

  unsigned char oi_analog01, oi_analog02, oi_analog03, oi_analog04;  /*rxdata.oi_analog01*/

  unsigned char oi_analog05, oi_analog06, oi_analog07, oi_analog08;         

  unsigned char oi_analog09, oi_analog10, oi_analog11, oi_analog12;

  unsigned char oi_analog13, oi_analog14, oi_analog15, oi_analog16;

  unsigned char rc_main_batt, rc_backup_batt;

So i decided to try rc_main_batt and rc_backup_batt...
If found that if you took rxdata.rc_main_batt and applied the formula "current voltage = battery_voltage * 0.038 + 0.05; " found at the bottom of 'ifi_aliases.h' you get a value of 650.. im running the the controller off a wall adapter putting out 6 volts to i think this is pretty acurate.

Here is the code if anyone is interested..

Code:

float current_voltage = 0;

float average_voltage = 0;

int voltage_count = 0;



int i = 0;

int i2 = 0;



void Process_Data_From_Master_uP(void)

{

        Getdata(&rxdata);   /* Get fresh data from the master microprocessor. */



        current_voltage = rxdata.rc_main_batt;                 // Store current voltage

        average_voltage += current_voltage;                        // Add the current voltage to the average stack



        voltage_count++;                                                        // Increase the average stack count

        

        if (voltage_count == 39)                                        // If the stack is 40

        {

                average_voltage = (average_voltage / 40) * 0.038 + 0.05;        // Get the average and apply formula

                i = (int)average_voltage;                                                                        // Truncate decimals

                i2 = (int) ((average_voltage - i) * 1000);                                        // Subtract to get decimals only and then multiply by 1000

                printf("Average: %d.%03d \n",i,i2);                                                        // Print the two together to make it look like a decimal



                average_voltage = 0;                                                                                // Reset the stack

                voltage_count = 0;                                                                                        // Rest the counter

        }

        

        Putdata(&txdata);             /* DO NOT CHANGE! */

}

Thanks to Mark McLeod for example on how to printf floats...

EDIT
I just tried using
current_voltage = rxdata.oi_analog01;
and i get averages of 4.7 so im not sure what to think now.. can anyone clarify as to what one it is and why i get an error when i try to use the 'battery_voltage' aliase... also i just realized that the battery_voltage aliase points to 'rxdata.rc_analog01' which i cant seem to even find anywhere..