AngularJS binds to dynamic model name

I have a generic JSON structure like

{
 "parameters":
              [
                {
                  "key":"fieldName","posibleValues":["Val1,"Val2"],
                  "key":"anotherField","posibleValues":["ValA,"ValB"]
                }
              ]
 }

      

        
        
        
      

    

No, I want to do something like this:

<div ng-repeat="parameter in parameters">
  <ng-form name="paramForm">
    {{parameter.key}}: <select ng-model="request.parameter.{parameter.key}" ng-option="..." />    
  </ng-form>


</div>

      

        
        
        
      

    

Problems arise with

select ng-model="request.parameter.{parameter.key}"

      

        
        
        
      

    

So, I want to set up a model called "request.parameter.fieldName" (according to the "key" in the JSON structure.

Is it possible? Or should I help myself with changing ng?

thank