Yes Yannick very clear, but for the other formats it didn't work for me, then using the method described above it worked for all tested archive formats, only for LZH archives I had to insert two "strings" because there are LZH with different signature.
I attach the configuration of all working formats:
ArcType,lzx,LZX,
ArcType,#4C5A5800,LZX,
ArcType,lha,LHA,
ArcType,#2D2B2D6C68352D,LHA,
ArcType,lzh,LZH,
ArcType,#217E2D6C68352D,LZH,
ArcType,#22662D6C68352D,LZH,
ArcType,zip,ZIP,
ArcType,#504B0304,ZIP,
ArcType,tgz,TGZ,
ArcType,#1F8B0800,TGZ,
ArcType,tar.gz,TGZ,
ArcType,#1F8B0800,GZ,
ArcType,tar.bz2,TBZ2,BZ2,
ArcType,#425A68,TAR,TBZ2,BZ2,
ArcType,tar,TAR,
ArcType,#646F736C73,TAR,
ArcType,rar,RAR,
ArcType,#52617221,RAR,
ArcType,7z,7ZIP,
ArcType,#377ABCAF,7ZIP,
ArcType,gz,GZ,
ArcType,#1F8B0800,GZ,