App from a check list

hello, how do I get my delete button to work? I managed to put it but not give the function!! thank you who can contribute!!

todolist_1_Screen1.ais (24.0 KB)

in this aias how do I include a function for the button to exclude tasks, one by one when I select the checkbox of each task!! if you can help thank you!!

In order to import someone your ais, he/she must have imported all extensions used in your project, otherwise errors occurs. Better not share an ais but a test aia in order to get help