How to change a player's jump height?

Hi there, I have a character with first person controls set up, but their jump heigh is really lame. See the blueprints below, this is the character class:

Set Jumpz velocity does not make any difference. Editing “Character Movement” / “Jump Z Velocity” on the player also makes no difference. Where am I going wrong? I tried to follow this page: How can I change a characters jump height in blueprints? - Character & Animation - Unreal Engine Forums

But it doesnt make a difference.

Hello!

Plug event begin play to the set jumpZvelocity and you’ll be fine