Roman numeral converter

Hello Friends,
I am making a converter, where kids enter numbers from 1 to 50 to get their corresponding Roman numerals. for example kids enter 10 and it’ll display X.
I have put a input textbox on stage name myIntxt, and one dynamic textbox named myOuttxt…
when i press showBtn it should display the roman Number…
How can i do this…??
can anyone hel me …!!