Healthbar not working

I’m trying to get a regular health bar with the colour fill indicating the player’s health but it just stays grey. Not even sure if it’s working.
Here’s some screenshots:

Here’s the tutorial I’ve been trying to follow: [OUTDATED]How To Create A RPG In UE4[Part.5 Health And EXP Bar!] - YouTube

Could anyone help me as to what is wrong or what I need to add? Thanks!

Is your HP variables set to 0?

http://imgur.com/a/lxnyw No I tried 10 and 0.5

Instead of setting the player reference on construct, try casting to the player and getting the HP variable inside the Get Health Percent

I’m not really sure what you mean, sorry I’m extremely new to Unreal Engine 4 and game developing in general