how to display two grids in a Yii PHP application

I tried to change the name of the Yii action in the controller to allow for a second grid to be displayed, but it does not work anymore.

Client code:

Server code:

public function actionGrid_data_1()


Can anyone help? Thanks.

OK silly me, it was a matter of access control, I forgot to create a rule for the renamed action.
Thanks, sorry!