else
local err, foundkey = core.hardnested(blockno, keytype, key, trgblockno, tostring(targetkeytype), trgkey, 0,0,0,0)
foundkey = foundkey or ""
else
local err, foundkey = core.hardnested(blockno, keytype, key, trgblockno, tostring(targetkeytype), trgkey, 0,0,0,0)
foundkey = foundkey or ""