title: Rewarding user for completing a task
body: <p>I am working on a new project where a user needs complete some given tasks for example lets consider the user needs to watch 10 rewarding video ads for getting rewarded back with $1
  Which goes to his paypal wallet
  So everytime he/she watches 10 videos he will be rewarded with a dollar how can i add this feature to my flutter app?</p>
  <p>So what i have done is use a counter to count how many videos have been watched. After every video increase the count value and when it reaches 10 you call a function that sends 1 dollar to the user's account. After that, I reseted the counter value to 0. So my main problem is how can i send that 1$ to that user so that he can redeem to his wallet</p>