Spring RTS Engine

So this is what my current metal_map_layout looks like: http://pastebin.com/9z7DRmSB

My question: what is the best way (in Notepad++ or the like) to replace all those different metal values with a single value (2.15)? I've been trying with regular expression but I don't understand it too well and each time get stuck at "it doesn't work and I have no idea why".

This works in Komodo Edit, which may be the same in NP++:

Nope just invalid expression error.

I learned that alt-click in column and type the value manually works. As of now that seems like the best way for Notepad++.

The Yak wrote:Nope just invalid expression error.

I learned that alt-click in column and type the value manually works. As of now that seems like the best way for Notepad++.

That is painful for me to read.

I used:
Replace: metal\s*\=\s*[\d\.]+
With: metal = 2.15
and it worked.