@ -343,7 +343,7 @@ define([
for (var id in model.views) {
if (model.views.hasOwnProperty(id)) {
var view = model.views[id];
var cell_index = this.notebook.find_cell_index(view.options.cell);
var cell_index = that.notebook.find_cell_index(view.options.cell);
state[model_id].views.push(cell_index);
}