ShowPower {
85256, -- Templar's Verdict
"HOLY_POWER",
3,
"flash"
}

That's my user rule. It doesn't show up when I hover over Templar's Verdict in the set spells thing. Any ideas?

Examples added to https://github.com/Adirelle/AdiButtonAuras/wiki/Example-rules.

I think the base Paladin rules have some Holy Power thing already that may be conflicting?

return ShowPower {
    100, -- Charge
    "RAGE",
    5,
    "flash",
    }

This rule above works. It's useless but it works. Check for typos and duplicate rules in yours. And reload interface of course. The following should work for you. Untested, I don't play Pally.

return ShowPower {
    85256, -- Templar's Verdict
    "HOLY_POWER",
    3,
    "flash",
    }

I confirm there is a rule to display Holy Power on Templar's Verdict. It may fails from some reason through (bad id ?). And should flash at 5 Holy Power.

However, I think there is something funny with Paladin Holy Power's, like have maximum 3 Holy Power but also a stock of 2.

Closing because of lack of feedback.