Hi, Modeller caretakers...

Recently, i am trying to introduce HETATM into my built model, however i have encountered a problem, which is 631E:

"No aligned template residues for BLK residue;
number of templates: @I1
Make sure that each BLK residue in your target
sequence is aligned with your templates.
(This can also be caused by a lack of structural
information. Make sure you are using a PIR, not
FASTA, alignment file, and that the template
headers use 'structureX' not 'sequence'.)" 


and this is my alignment:

>P1;2ZWRA
structureX:2ZWR.pdb: 1 :A:+202 :A:MOL_ID 1; MOLECULE METALLO-BETA-LACTAMASE SUPERFAMILY PROTEIN; CHAIN A, B; ENGINEERED YES:MOL_ID 1; ORGANISM_SCIENTIFIC THERMUS THERMOPHILUS; ORGANISM_TAXID 300852; STRAIN HB8; GENE TTHA1623; EXPRESSION_SYSTEM ESCHERICHIA COLI; EXPRESSION_SYSTEM_TAXID 562; EXPRESSION_SYSTEM_VECTOR_TYPE PLASMID; EXPRESSION_SYSTEM_PLASMID PET11A: 2.20: 0.19
MRVFPVTLGPLQENAYLVETG-EGPVLIDPGDEPEKLLALFQTTGLIPLAILLTHAHFDHVGAVAPLVEALDLPV
YLHP-----L-DLPLYEGADLAARAWGLAIPKPPLPVRPLEEGMRLFGFQVLHLPGHSPGHVAFYDPEGAQVFSG
DLLFRGSVGRYDLPGADPKALFASLK-RLLSLPPETRVHPGHGPGTTLGLEARTNPFL..*

>P1;Metallo-beta-lactamase
sequence:Metallo-beta-lactamase: :212 : : ::: 0.00: 0.00
M-FKQIPLGPIQTNAYVLYNDDKEAVIFDPGGDAEALITWLKREQLTPLAILLTHAHFDHIGAVDAVRDTFSIPV
YLHTKERHWLEDPALNGSSRLTGRPITTAKPADHLLTNEKSLTIGTFTFSVFHTPGHSPGSVSYYYQKEAVLFSG
DVLFQQSIGRTDLRGGDHTLLLASIHNKILPLPERTIVASGHGPLTTIGQEMDHNPFLTGY--..*

Your suggestion is much more appreciated... Thank you
--
Zhao Yang