Create a function in SqlServer which does not return anything

I am creating a simple function which inserts a row to a table. After the insertion I don't need the function to return anything. I just checked the function creation syntax in MSDN and it seems like a function must return a value. I also tried to create a function but got syntax error.

I wonder if there is a way to create a function which doesn't return any value.

Can anyone please let me know if there is a way to create such a function? Thanks in advance:)