Save Binary file

How can I save/read binary file?
at the moment I save map into multiple CNC ARRAY files
My data is in byte format: 0-255
I want to save my mapdata in 8bits, not 32bits as CNC ARRAY

I was trying to send my mapdata to a Rich Edit Object:
IndexToChar( "ASCii", ValueAtXY( "World", XX( "OPaint" ), YY( "OPaint" ) ) )
and save data from there, but some of the low ASCii number don't show in the Rich Edit Object.
I can store map in a Action String but how can I save data to a file from the string?

I don't know if its possible to convert a float and save it in the number CNC ARRAY?
I want to save my map file to 1 file, I don't know if CNC ARRAY can save both INT and STRINGS?

Is there an other way for me to save 0-255 binary char data to a file?

Thank thee very much!
Somehow they where not installed

What I do wrong?
the byte is signed: -128 to 127

In helpfile say:
Description nByte integer A single byte ranging from 0 to 255.

Today I test Binary Array that in my first impression look less impressive than the Binary Object, BUT

Only in Binary Array:
Read -> Byte -> Unsigned SignedByte(-128 to 127)/Byte(0 to 255)

Only in Binary Object:
Append
Blowfish
MD5 signature

I am crying here
I want Append, but need Unsigned Byte

How can I make the Binary Object to read unsigned char?
if the Binary Object can't read unsigned char then I can only chose the Binary Array that don't do Append
I can live without Append but life would be so much better with Append

Thank the. thank thee very much ouly
I was almost giving up and go away
I was thinking it could be solved like this but didn't know how
When I save 255 to file it was FF so I know the number was right.

I manage to save Binary Object data:
AAA.blx 24.0 KB
From the old map save files:
a Platform 01.BLm 88.0 KB
a Platform 01.BLo 80.0 KB
168 KB on disk

168-24=144

With the Binary Object I can make 144 KB (147456 bytes) smaller Map file
100 * 100 * 2 layer = 20000 bytes

Little strange that Array Object save the 2 map array:
100 * 100 * 2 (layer/files) * 4 (32bit) this should be 80KB not 144KB

Anyway I am happy I actually manage to put all the data in 1 mapfile and make it significant smaller