js for multiple characters in the conversion file

Hi all,

I want to load master data 0mat_plant from BW.I need to filtre some invalid materials or at least I must replace invalid chars from those materials.

What I did was using  js: %external%.replace("/","") in the conversion file

This works fine but when I add some more invalid chars, it does not work.It says invalid members and those members include some other chars like (,\,+ etc..I tried many variations.Could you send me the javascript to replace those characters: "/ ( \ ) +"?

This works fine but when I add some more invalid chars, it does not work.It says invalid members and those members include some other chars like (,\,+ etc..I tried many variations.Could you send me the javascript to replace those characters: "/ ( \ ) +"?