I tried this and it does not wokr. Is this what you mena though?
<!--- ROW 1 ---->
#hiddenFieldTag(name="resident[tenantid[1]]", value=resident.tenantid)#
#hiddenFieldTag(name="resident[buildingid[1]]", value=resident.buildingid)#
<td>#textFieldTag(name="resident[spotNumber[1]]", value=resident.spotNumber, class="input-mini")#</td>
<td>#textFieldTag(name="resident[type[1]]", value=resident.type, class="input-mini")#</td>
<td>#textFieldTag(name="resident[plate[1]]", value=resident.plate, class="input-mini")#</td>
<td>#textFieldTag(name="resident[make[1]]", value=resident.make, class="input-small")#</td>
<td>#textFieldTag(name="resident[model[1]]", value=resident.model, class="input-small")#</td>
<td>#textFieldTag(name="resident[year[1]]", value=resident.year, class="input-mini")#</td>
<td>#textFieldTag(name="resident[colour[1]]", value=resident.colour, class="input-mini")#</td>
<!--- ROW 2---->
#hiddenFieldTag(name="resident[tenantid[2]]", value=resident.tenantid)#
#hiddenFieldTag(name="resident[buildingid[2]]", value=resident.buildingid)#
<td>#textFieldTag(name="resident[spotNumber[2]]", value=resident.spotNumber, class="input-mini")#</td>
<td>#textFieldTag(name="resident[type[2]]", value=resident.type, class="input-mini")#</td>
<td>#textFieldTag(name="resident[plate[2]]", value=resident.plate, class="input-mini")#</td>
<td>#textFieldTag(name="resident[make[2]]", value=resident.make, class="input-small")#</td>
<td>#textFieldTag(name="resident[model[2]]", value=resident.model, class="input-small")#</td>
<td>#textFieldTag(name="resident[year[2]]", value=resident.year, class="input-mini")#</td>
<td>#textFieldTag(name="resident[colour[2]]", value=resident.colour, class="input-mini")#</td>