Struct Generation not working

[abagchi]

property use_struct { type = string; component = addrmap | regfile; };

addrmap foo_map {
regfile bar_regs {
reg {
field {sw=rw; hw=r;} fld1[9:0];
field {sw=rw; hw=r;} fld2[15:15];
} a_reg[2];
reg {
field {sw=r; hw=w;} fld3[9:0];
field {sw=r; hw=w;} fld4[15:15];
} b_reg[2];
} bar @0x100;

use_struct;

} foo;

output systemverilog {
root_decoder_interface = parallel
use_async_resets = true
reuse_iwrap_structures = true
always_generate_iwrap = true
}

Errror:
line 1:9 no viable alternative at input 'use_struct'
line 1:20 mismatched input '{' expecting ';'