DC Motor and Potentiometer positioning

Using Arduino Motors, Mechanics, Power and CNC
22

here is the code

void Motor()
{
	val1=analogRead(Poti1);
	val2=analogRead(Poti2);
	targetval1=(val1<(val1-10)||val1>(val1+10));
	if ((val1>val2)&&(val1>minval))
	{
		Motor_1_3();
	}
	if ((val1<val2)&&(val1<maxval))
	{
		Motor_2_4();
	}
	if ((targetval1=val2)||(val1=minval)||(val1=maxval))
	{
		Motor_OFF();
	}
}