do_shortcode & render custom field won’t work

Are you sure that you are supposed to nest the shortcodes like this?

If the following is going to work depends on how the plugin you use handles nested shortcodes.

 <?php
    echo do_shortcode('[xt_tabs_button]
    [xt_tab title="Informatie"] (types_render_field("informatie", array("output"=>"html"))); [/xt_tab]
    [xt_tab title="Spelregels"] (types_render_field("spelregels", array("output"=>"html"))); [/xt_tab]
    [/xt_tabs_button]');
 ?>

Do you have the docs for this plugin available? The (types_render_field("informatie", array("output"=>"html")));also doesn’t look quite right.