It's ok, i've got it, it's stone-walls

Ok, thanks for the help, I just need the technology now, i fixed the other bit.

What should the technology be than, "wall"?

Do you mean like this?
data:extend(
{
{
type = "wall",
name = "iron-wall",
icon = "__IronWall__/graphics/iron-wall-icon.png",
flags = {"placeable-neutral", "player-creation"},
collision_box = {{-0.29, -0.29}, {0.29, 0.29}},
selection_box = {{-0.5, -0.5}, {0.5, 0.5}},
minable = {mining ...

Could you please elaborate at where I should be putting these curly braces, i'm not sure.

Don't worry, thanks for trying at least

Yes, I have it all, i've checked all the names in all the files and they all match.

This is my entity.lua (this is my first mod so i'm not 100% sure of what i'm doing).

I can't find where iv'e gone wrong :/
data:extend(
{

type = "wall",
name = "iron-wall",
icon = "__IronWall__/graphics/iron-wall-icon.png",
flags = {"placeable-neutral", "player-creation"},
collision_box = {{-0.29, -0.29}, {0.29, 0.29}},
selection_box = {{-0.5, -0.5}, {0.5, 0.5}},
minable ...

Thanks, i have notepad ++ already, i just didn't realise they were needed (this is my first mod).
Thanks for the help

http://i.imgur.com/JOSF24e.png

I can get my entity.lua to work.
data:extend(
{

type = "wall",
name = "iron-wall",
icon = "__IronWall__/graphics/iron-wall-icon.png",
flags = {"placeable-neutral", "player-creation"},
collision_box = {{-0.29, -0.29}, {0.29, 0.29}},
selection_box = {{-0.5 ...

Wow, I can't believe I missed that, oh well, thanks for the help.

I am trying to make a simple mod that adds in new wall types, starting with iron walls. For some reason my game can't seem to be able to use decrease and percent in the resistances. this is my first mod and the code is taken from other game files with a few of my own bits of work.

Here is my enity ...