Help on making character fly (Project File Attached)

I added a event (set mouse on any click to bird )

i added the action( bird set platform vector Y to -700)

As soon as i run the game the bird just competly fall down very fast

i even change the vector Y numbers and it does the same thing

I dont konw what to do,

i need help.

I just want my bird to fly with mouse click.

Attached project file.

I am sure it is something really simple I missed