Referencing Previous Spreadsheet

[cpupartsplz]

Hello,

I searched the forum for a similar problem and am very close to what I need, but not exactly there yet...

My spreadsheets are titled: "0", "1", "2", "3"...
I enter a value in K1 in "0".
I would like K1 in "1" to be (=0!K1 + 1)
I would like K1 in "2" to be (=1!K1 + 1)
etc...

There was a similar post on Yahoo! Answers and somebody suggested...
=INDIRECT("'Sheet "& VALUE(RIGHT( MID(CELL("filename"), SEARCH("]", CELL("filename"))+1,256), 2)) -1 &"'!A1")

Which I modified to...
=INDIRECT("'"& VALUE(RIGHT( MID(CELL("filename"), SEARCH("]", CELL("filename"))+1,256), 2)) +1 &"'!K1")

This almost works, but is off by 1...
When I change the "+1" at the end to "+0" or "-0" or take it out completely, it returns an error.
When I change the "+1" to "-1" it returns the original value in 0!K1.

Any ideas to off-set it just 1?

Thanks!