HERSOUT2 (Weird problem)

[Megahertz]

Megahertz,
MESS1[256] point to 256 byte in array. So you can receive next 255 characters.

So, can I write it as:

HSERIN2 [STR MESS1[0]\255, STR MESS1[256]\255]

Secondly, what will happen when it receives a $00 byte? and how do I convert this received data (512 bytes) back to hex format