setVehicleHandling(car,"suspensionLowerLimit",-0.15)

function getVehicleHandlingProperty ( element, property )
    if isElement ( element ) and getElementType ( element ) == "vehicle" and type ( property ) == "string" then
        local handlingTable = getVehicleHandling ( element ) 
        local value = handlingTable[property] 
 
        if value then -- If there's a value (valid property)
            return value
        end
    end
 
    return false
end

addCommandHandler("Obniz",function (ps)
    if isPedInVehicle(ps) then
        local vehicle = getPedOccupiedVehicle(ps)
        local suspensionLowerLimit=getVehicleHandlingProperty(vehicle,"suspensionLowerLimit")
        setVehicleHandling(vehicle,"suspensionLowerLimit",tonumber(suspensionLowerLimit)-0,15)
        outputChatBox("#63DBFF*Obni?y?e? auto.",ps,0,0,0,true)
        else
        outputChatBox("#63DBFF*Musisz by? w poje?dzie.",ps,0,0,0,true)
    end
end)

function getVehicleHandlingProperty ( element, property )
    if isElement ( element ) and getElementType ( element ) == "vehicle" and type ( property ) == "string" then
        local handlingTable = getVehicleHandling ( element ) 
        local value = handlingTable[property] 
 
        if value then -- If theres a value (valid property)
            return value
        end
    end
 
    return false
end

addCommandHandler("obniz",function (ps)
    if isPedInVehicle(ps) then
        local vehicle = getPedOccupiedVehicle(ps)
        local suspensionUpperLimit=getVehicleHandlingProperty(vehicle,"suspensionUpperLimit")
        setVehicleHandling(vehicle,"suspensionUpperLimit",tonumber(suspensionUpperLimit) + 0.15)
        outputChatBox("#63DBFF*Obni?y?e? auto.",ps,0,0,0,true)
        else
        outputChatBox("#63DBFF*Musisz by? w poje?dzie.",ps,0,0,0,true)
    end
end)