change savedvariable over function arg

[Syiana]

local function SUICreateTXT(text,anchor,point,pos1,pos2, ...)
        SUITXT = SUI:CreateFontString(nil, SUIConfig, "GameFontNormalLarge")
        SUITXT:SetPoint(point, anchor, pos1, pos2)
        SUITXT:SetText(text)
    end
 
    local function SUICreateCB(name,anchor,tooltip,db, ...)
        SUICheckbox = CreateFrame("CheckButton", nil , SUIConfig,"OptionsBaseCheckButtonTemplate")
        SUICheckbox:SetPoint("TOPLEFT", anchor, "BOTTOMLEFT", 0, -10)
        
        SUICheckbox:SetScript(
            "OnClick",
            function(frame)
                local tick = frame:GetChecked()
                db = tick
                if tick then
                    DEFAULT_CHAT_FRAME:AddMessage(name .. " Enabled", 0, 1, 0)
                    db = true
                else
                    DEFAULT_CHAT_FRAME:AddMessage(name .. " Disabled", 1, 0, 0)
                    db = false
                end
            end
        )
        SUICheckbox:SetScript(
            "OnShow",
            function(frame)
                frame:SetChecked(db)
            end
        )
 
        SUICheckbox:SetScript(
            "OnEnter",
            function(self)
                GameTooltip:SetOwner(self, "ANCHOR_BOTTOM")
                GameTooltip:AddLine("test", 248, 248, 255)
                GameTooltip:Show()
            end
        )
        SUICheckbox:SetScript("OnLeave", GameTooltip_Hide)
 
        text = SUI:CreateFontString(nil, SUIConfig, "GameFontHighlight")
        text:SetPoint("LEFT", SUICheckbox, "RIGHT", 0, 1)
        text:SetText(name)
        
    end
 
    --UI
    SUICreateTXT("UI",SUIConfig,"TOPLEFT",20,-75)
 
    SUICreateCB("Unitframes",SUITXT,"test",SUIDB.UNITFRAMES)
    SUICreateCB("Castbars",SUICheckbox,"test2",SUIDB.CASTBARS)
    SUICreateCB("Keys",SUICheckbox,"test3",SUIDB.KEYS)
    SUICreateCB("Gryphons",SUICheckbox,"test3",SUIDB.KEYS)

hey, i want to change a savedvariable with "db = true" in the "SUICreateCB" function is it not possible or do i something wrong?

hope someone can help me thx