How to click on a button 25 times very fast with only an activity?

Is this possible?

I need to go down into a list in a desktop application to find the button I want to click, so I saw the only method to do this is to click 25 times on the go down button.

How I can automate this?

Thank you for your answers.

Not one activity but two plus a variable.
Use a loop (While, Do While)

Ok, I’ll try that, thanks!