 
   mergeExplorative : ->
 
-    explorativId = @ui.explorative.find("select :selected").val()
-    url = "/annotations/Explorational/#{explorativId}/merge/#{@model.get("tracingType")}/#{@model.get("tracingId")}"
-    @merge(url)
+    explorativeId = @ui.explorative.find("input").val()
+    @validateId(explorativeId).then( =>
+      url = "/annotations/Explorational/#{explorativeId}/merge/#{@model.get("tracingType")}/#{@model.get("tracingId")}"
+      @merge(url)
+    )
 
 
   merge : (url) ->

  regions :
    "tasktype"    : ".task-type"
    "project"     : ".project"
    "explorative" : ".explorative"

  events :
    "click #task-merge"               : "mergeTask"

          <div class="form-group">
            <label for="explorative">Explorative annotations</label>
            <div class="row">
              <div class="col-md-10 explorative">
                <input type="text" class="form-control" placeholder="Explorative annotation id"></input>
              </div>
              <div class="col-md-2">
                <button class="btn btn-primary" id="explorative-merge">Merge</button>
              </div>
