I have not tried this but: If I was to need to store such a big variable I would do something like:

info VAR bit[256]


This would hold 256 bits of data which is the maximum array size for BIT variable.

Once the variable is full, or the serial in is complete I would then look at sending the data in the same sort of format to the eeprom.

As I said, I have not done this myself, but that is where I would start playing around.

Lots of luck.