Joystick jump and move at the same time?

I trie to put a joystick on the endless up runner game from gdevelop

So I do this to move the character

But my character can only go left, right or jump.
I want he can go left and jump at the same time to jump on the next platform.

I tried to simulate left and jum if multitouch is on upleft direction.
But that doesn’t work

Thanks for help

How do you usually jump in platformer games with a gamepad?

No, but like it’s a vertical game, i don’t have many space for 2 buttons and a joystick. So I hope, i can change the left-jump and right-jump by the left-up and right-up direction of the joystick.