I want to create a nested expression in ng-bind-html
eventdetails is a json object white data gets the input from a return $stateParams function
<div class="into" ng-bind-html="{{eventdetails.{{data.genre.{{data.event}}.intro}}}}
You don't need any of the curly braces and use bracket notation to browse an object via variables, ng-bind-html is an Angular directive:
ng-bind-html="eventdetails[data.genre[data.event]].intro"