Variable Resistor controlled motors and signalread

hey there, first time poster with a question about some of the Arduino syntax and code. A class partner and I are having a difficult time with the arduino software. We want the software to be able to tell the resistance coming back from two variable resistors (one controlling movement: Forward, Backward, Release (stop) the other controlling the amount of volts going through the signal read software in the arduino and have that information control the spin and power of the motors. Here is what we have so far (please keep in mind we both have very little experience with any code):

#include <AFMotor.h>

AF_DCMotor motor1(1, MOTOR12_64KHZ);
AF_DCMotor motor2(2, MOTOR12_64KHZ);
void setup() {
motor1.setSpeed(200);
motor2.setSpeed(200);
//The previous information is just to define motors 1 and 2
//as well as setting the range of speed for the motors
}
void FORWARD () {
motor1.run(FORWARD);
motor3.run(FORWARD);
map(Signal,520,1023,100,255);
//in this Void group we have the requisites for the motors to move
//forwards
}
void BACKWARD () {
motor1.run(BACKWARD);
motor2.run(BACKWARD);
map(Signal,500,0,100,255);
//in this Void group we have the requisites for the motors to move
//backwards
}
void release () {
motor1.run(RELEASE);
motor2.run(RELEASE);
map(Signal,501,519,100,255);
//in this Void group we have the requisites for the motors to stop
}
void loop () {
if(pinFiveInput > 520);
FORWARD
if (pinFiveInput < 500):
BACKWARD
else
RELEASE
//This loop is to tell the functions to continue checking for the
//signal of volts coming in and what function to use when the
//volts are read
}

so how do I fix the "expected unqualified-id before numeric constant in function Void RELEASE () in Function Void Loop
Bad error line-2
?

thank you so much for taking some time out of your busy surfing schedule and we would both greatly appreciate whatever information you might provide, even harsh constructive critques because we thrive on real teaching.

Some parentheses and a semicolon for the function call, and lose the semicolon from the "if" statement?

I think I’ve figured it out after looking at the refrence table again, so far this is what we have:
#include <AFMotor.h>

AF_DCMotor motor1(1, MOTOR12_64KHZ);
AF_DCMotor motor2(2, MOTOR12_64KHZ);
int signal=0;

void setup() {
motor1.setSpeed(200);
motor2.setSpeed(200);
//The previous information is just to define motors 1 and 2
//as well as setting the range of speed for the motors
}
void forward () {
motor1.run(FORWARD);
motor2.run(FORWARD);
map(signal,520,1023,100,255);
//in this Void group we have the requisites for the motors to move
//forwards
}
void backward () {
motor1.run(BACKWARD);
motor2.run(BACKWARD);
map(signal,500,0,100,255);
//in this Void group we have the requisites for the motors to move
//backwards
}
void release () {
motor1.run(RELEASE);
motor2.run(RELEASE);
map(signal,501,519,100,255);
//in this Void group we have the requisites for the motors to stop
}
void loop () {
if(signal > 520) {
forward ();
}
if (signal < 500) {
backward ();
}
else {
release ();
}
}
//This loop is to tell the functions to continue checking for the
//signal of volts coming in and what function to use when the
//volts are read

the main issue was that I was confused by where else the signal definition should be in the code (although there were many issues).