1 <input class=
"form-control" ng-model=
"chain[1][0]" crm-ui-select=
"{data: entities, allowClear: true, placeholder: 'None'}" />
2 <select class=
"form-control api4-chain-action" ng-model=
"chain[1][1]" ng-options=
"a for a in actions" ></select>
3 <input class=
"form-control api4-chain-params" ng-model=
"chain[1][2]" placeholder=
"{{:: ts('Params') }}" />
4 <input class=
"form-control api4-chain-index" ng-model=
"chain[1][3]" placeholder=
"{{:: ts('Index') }}" />