value attribute initial value: 0
max attribute initial value: 1
value attribute after setting value attribute to -1: 0
max attribute after setting max attribute to -1: 1
max attribute after setting max attribute to 0: 1
value attribute after setting value attribute to 50: 1
value attribute after setting max attribute to 100: 50
max attribute after setting max attribute to 100: 100
value attribute after setting max attribute to 101: 100
value attribute after setting value attribute to -1: 0
value attribute after setting max attribute to 0: 0
max attribute after setting max attribute to 0: 1