error : (Unknown identifier: 'touch'.) help me please !!

Unity Engine
1

unıty : (unknown identifier: ‘touch’.)
help me please
codes

if ( solButton.HitTest(touch.position)){
onsol.steerAngle = -15.0;
onsag.steerAngle = -15.0;
}
else if ( solButton.HitTest(touch.position)){
onsol.steerAngle = 0;
onsag.steerAngle = 0;
}

if (sagButton.HitTest(touch.position)){
onsol.steerAngle = 15.0;
onsag.steerAngle = 15.0;
}

else if ( sagButton.HitTest(touch.position)){
onsol.steerAngle = 0;
onsag.steerAngle = 0;
}
}
EngineRPM =(onsol.rpm + onsag.rpm)/2 * GearRatio[currentGear];

2

var touch = … ?

3

what hpjohn said. what type of object is the touch? that peace is missing from the code.
touch.position tells me that it’s a Transform