Firstly, you are using "Wait for previous action to complete" wrong. It's supposed to be used with asynchronous action, they have a little clock icon on the right. You don't have them in your code. If you want to wait to the end of the tick, use "Wait 0".
When you are creating an object by name and then want to do something to it, the common method is using a family. Add all sprites to a family. After the "Create" action add a sub-event with this condition: "Pick last created Family". And in the sub-event you'll be able to change the animation.