Need help correcting the error in the code

Given is the code and I am having getting an error "invalid conversion from ‘const char’ to ‘char’. What I want to do is, pass the value to function.

//--------------------------------------------------------------------------------------
// Tx Code
// Wireless Force Sensor
// By Yaameen Faisal
//--------------------------------------------------------------------------------------

#include <VirtualWire.h> // Include VirtualWire library for wireless transmission
int fsrPin = 1; // define pin A0 as FSR pin
int analog[8]; // define array to get multiple analog readings
int voltage[8]; // define array to get multiple voltage readings
int j;
int awakeCount = 0, restlessCount = 0, asleepCount = 0 ; // define and initialise counters

void setup()
{
Serial.begin(9600); // setup serial communication with baud rate (bits per second) to diplay on serial monitor
pinMode(fsrPin, INPUT); // set pin A0 as input
}

void loop()
{
for(j=0; j<=7; j++)
{
analog[j] = analogRead(fsrPin); // read pin A0, 8 times
Serial.print("Analog Reading = ");
Serial.print(analog[j],DEC);

voltage[j] = map(analog[j], 0, 1023, 0, 5000); // convert analog reading (0-1023) to voltage (0-5V)
Serial.print(", Voltage in mV = ");
Serial.print(voltage[j],DEC);

if (voltage[j] >= 3500) //check if voltage >= 3500, if so restless counter = +1
{
restlessCount = restlessCount + 1;
}
else if (voltage[j] > 1500 && voltage[j] < 3500) //check if 1500 < voltage < 3500, if so awake counter = +1
{
awakeCount = awakeCount + 1;
}
else if (voltage[j] > 100 && voltage[j] <= 1500) //check if 100 < voltage <= 1500, if so asleep counter = +1
{
asleepCount = asleepCount + 1;
}

Serial.print(", Awake count = “);
Serial.print(awakeCount, DEC);
Serial.print(”, Restless count = “);
Serial.print(restlessCount, DEC);
Serial.print(”, Asleep count = ");
Serial.println(asleepCount, DEC);

delay (3000);
}

int asleepcountLed = asleepCount; // store asleep counter value in alseepcountLED
int awakecountLed = awakeCount; // store awake counter value in awakecountLED
int restlesscountLed = restlessCount; // store restless counter value in restlesscountLED
Serial.println("-----------------------------------------------------------------------");

if (asleepcountLed > awakecountLed && asleepcountLed > restlesscountLed) // if asleep > awake & asleep > restless, led = green colour
{
const char *data = “g”; ("ERROR IS HERE, BUT I DONT KNOW HOW TO CORRECT IT)
msgsend(data);
}

asleepCount =0; // reset asleep counter
awakeCount = 0; // reset awake counter
restlessCount = 0; // reset restless counter

delay (500);
}

void msgsend(char msg)
{
vw_send((uint8_t *)msg, strlen(msg));
vw_wait_tx();
}

I can help with part - use single quotes here

const char *data = "g";

Not how to get from the example

void loop()
{
const char *msg = "hello";
vw_send((uint8_t *)msg, strlen(msg));
delay(400);
}

to what you are doing

Stick with one thread!!!!