My jump imput works but my character wont jump

Question

I'm new to coding and making a endless runner game and coded in a jump input it works for the menu, then when the game plays my player runs then falls to his death. He could run on the platform but he isn't able to jump

here's the script

extends KinematicBody2D

const UP = Vector2(0, -1)
const GRAVITY = 5
const JUMPSPEED = 150
const JUMPHEIGHT = -350
var velocity = Vector2.ZERO

func _process(delta):
velocity.y += GRAVITY

if Input.is_action_just_pressed("Jump") and is_on_floor():
    velocity.y = JUMP_SPEED

if is_on_floor():
    $AnimatedSprite.play("Run")
else:
    $AnimatedSprite.play("Jump")

move_and_slide(velocity,Vector2.UP)

func onfallzonebodyentered(body):
gettree().changescene("res://scenes/TitleScreen/Title Screen.tscn")

thanks in advance

Answer 1

Try making the constant jumpspeed a negative number.