If it is not connected to a database it works that way
$ w (“# progressBar1”). targetValue = 50;
export function checkbox3_change (event) {
if ($ w (“# checkbox3”). checked === true) {
$ w (“# progressBar1”). value = $ w (“# progressBar1”). value + 1
} else {
$ w (“# progressBar1”). value = $ w (“# progressBar1”). value - 1
}