Decreasing the amount of damage a player takes in general

[pogh10]

Hello I have developed a skill system. I am trying to make a skill called resistance which decreases the amount of damage you take from anything. However, I cannot find out why my set resistance on spawn code is not working. My player keeps taking 10 damage from a zombie even if I increase my skill. All help is appreciated.

        if pl:getChar():getData("Skill_RESIST", 0) >= 1 then
            pl.Resistance = (1 - ResistanceVar * pl:getChar():getData("Skill_RESIST", 0))
			pl:ChatPrint("You should be taking less damage now.")
        else
            pl.Resistance = 1
			pl:ChatPrint("Something went wrong!")
        end

local ResistanceVar = 0.09 -- How much damage X is taken off the player for each resistance skill he/she has, dont set this higher than 0.09 or else players will be invincible at level 10 of this skill.

**This is the code that sets the player's damage resistance on spawn**

[pogh10]

function SCHEMA:ScalePlayerDamage(client, hitGroup, dmgInfo)
    if client:getChar():getData("Skill_RESIST", 0) == 0 then
        dmgInfo:ScaleDamage(1.5)

        if (hitGroup == HITGROUP_HEAD) then
            dmgInfo:ScaleDamage(7)
        elseif (LIMB_GROUPS[hitGroup]) then
            dmgInfo:ScaleDamage(0.5)
        end
		
			else
			
            dmgInfo:ScaleDamage(1.5 - 0.03 * client:getChar():getData("Skill_RESIST", 0))

            if (hitGroup == HITGROUP_HEAD) then
                dmgInfo:ScaleDamage(7 - 0.03 * client:getChar():getData("Skill_RESIST", 0))
            elseif (LIMB_GROUPS[hitGroup]) then
                dmgInfo:ScaleDamage(0.5 - 0.03 * client:getChar():getData("Skill_RESIST", 0))

        end
    end
end

This is something else I've worked up.

[FuzzyLiama]

Would it be easier just to increase the player hp every skill?

[Leafdroid]

Taken from the wiki.

function GM:EntityTakeDamage( target, dmginfo )

	if target:IsPlayer() then

		dmginfo:ScaleDamage( 0.5 ) // Damage is now half of what you would normally take.

	end
end