dump local error

hi,

hi,
i am getting an error in running following code(dump local)

compute 1 all property/local batom1 batom2 btype
dump 1 all local 1000 tmp.dump index c_1
ERROR: Dump local compute does not calculate local vector

In lammps manual eg: is given as follows

compute 1 all property/local batom1 batom2 btype
compute 2 all bond/local dist eng
dump 1 all local 1000 tmp.dump index c_11 c_12
(c_11 c_12 i just wonder why 1 and 2 are bold )

really? i have:

compute 2 all bond/local dist eng
dump 1 all local 1000 tmp.dump index c_1[1] c_1[2] c_1[3] c_2[1] c_2[2]

axel