Call paypal pro form from theme with php

Hi,

I wonder if I can call the paypal pro form in my theme using php. Here is what my intention is

if (current logged in user is level 0)
	display upgrade to level 1 form
else if ( current logged in user is level 1)
	display upgrade to level 2 form
...

I cannot do this within a post with shortcode (I know I can install a plugin to execute php within a post, but I don’t want to use this plugin). I try do_shortcode (‘[s2Member-Pro-PayPal-Form /] but it does not work, and I couldn’t find the right function to call to display the form out.

ohh it’s solved. I forget to echo.
It should be ‘echo do_shortcode’

Thanks for the follow-up.

<?php
echo do_shortcode('[s2Member-Pro-PayPal-Form /]');