Unexpected behaviour (Tracker / Prop Manipluator / HUD message / VFX spawner) help please

Hi all,

I have the sailing ship prop inside a Prop Manipulator Volume to set HP of the individual components/panels and resources when harvested. This is connected to a tracker which tracks damage events so that each time a player destroys a wooden panel it registers as 1 hp loss.

At 75% damage (25hp left) I wanted to use a HUD Message Device to give a low hp warning.

This works initially as the hp hits 25 or less the message appears on the UI and the audio lets me know but each hit after does the same thing. Also there are 2 ships (its a Red vs Blue) the same setup for the other ship gives me 2 messages - 1 for each blue and red ship even tho I am only hitting the blue (or red) ship.

When I test/tweak I try to make sure both pairs of devices (trackers/hud msg etc) are matching accordingly. But the error persists.

Another thing possibly related, is I wanted to spawn niagara smoke effect when the ship was at half then at low hp as well with a VFX spawner that is set off by the same tracker. I have 4 different particle systems - one for 50% hp and another at 75% hp for both ships. The problem here is that the particle systems spawn semi randomly. Similar to the HUD msg device where I will damage Ship A to 50% and it will start to smoke but also so will Ship B. Or another time I will get Ship A to 75% down (both smokes go off as expected) but.. smoke 50% goes off on Ship B.

I have deleted and replaced all device. I am sure I am missing something but just not sure what.

The HP system does work (at 0hp the red/blue winner is announced correctly based on which ship is sunk) its just these issues are blocking some of the nice to haves warning and smoke.

Does anyone have any advice please? Happy to answer any questions to make things clear if that will help.

Thank you for your time.