mesh texsize

[romfis-austria]

my porblem is the meshbox texsize.
example:

meshbox
position 180 180 14
size 8 107 1
rotation 135
color gold4 1
addtexture boxwall
texsize -5.0 -5.0 -107.0 -8.0
end

not find the right size for 8 107 1
(texsize -5.0 -5.0 -107.0 -8.0 is not correct)
texture is boxwall.png and roof.png.

and the next is the meshpyr texsize
example:

meshpyr
position -220 -220 0
size 2 2 16
rotation 45
end

texture is pyrwall.png

Please, help

mfg.
romfis