My auto generat value only one time genrate when I tap next button function not genrate second time new value please answer

Question

Work
Whent tap next button genrate 2 value automatically
When tap second genrate 2 value 2 time but in my cod second time value not genrate why ?
https://code.sololearn.com/WWsgvzwwOlyR/?ref=app

Answer 1

Thanks brother