Plot horizontal line at specific price

There are plenty of examples of this already posted in this forum:

https://www.hahn-tech.com/ans/tos-horizontal-line/

https://www.hahn-tech.com/ans/create-and-edit-drawing-tools-from-chart-study/

But neither of those include a user input to adjust the price level from the Edit Studies window. So here is a solution that provides one user input and one line. You can add this to the chart as many times as you want adjust each value to suit your preference. Or you use this code as a starting point and create one study that includes as many lines as you want.

input priceLevelOne = 50.00;
plot levelOne = priceLevelOne;