I have a table where its dynamically populating data, I wanted that when I click a button (that is outside the form) I want to edit these fields. After editing these fields though, Formdata doesn't send any of the table data. What am I doing wrong here?

       <form role="form" ng-submit="updatestmt(data)"  name="updatedata" id="updatedata" >
                                                                <tr ng-repeat="b in blsheetinfo"  class="form-group">
                                                                    <td class="text-left "  ng-model="data.key" name="key" id="key" ><b> {{b.key}}</b></td>
                                                                    <td class="text-left" ng-model="data.particular" name="particular" id="particular" >{{b.particular}}</td>
                                                                    <td class="text-right" ng-model="data.amt" name="amt" id="amt"  ><input type = "string" value="{{b.amt}}" class="form-control"></td>
                                                                </tr>
                                                                <tr ng-if="blsheetinfo == null">
                                                                    <td class="text-center" colspan="3">No data found.</td>
                                                                </tr>
                                                            </form>