This is the text I have in my Starting room description.

Steven Universe is a cartoon show. It's about a boy with magical alien friends who tries to make peace across the universe. He is friends with Garnet, Pearl, and Amethyst. Together, Steven and his friends are called the Crystal Gems!
This game contains minor violence.
{command:Go to:Beach:Go to Beach}
{command:help:Help}

It's not working.
Game link here. https://textadventures.co.uk/games/view/tu-ceu4k5eqd0m0ztu7zya/steven-universe-new-beginnings

{command:Go to:Beach:Go to Beach}

So, that generates a link displaying the text Beach:Go to Beach, that enters Go to in the command bar when the player clicks it.

That seems to do exactly what it's supposed to do. The question is what you wanted it to do.

I think maybe you wanted:

{command:Go to beach:Go to Beach}

which is just the same as:

{command:Go to beach}

assuming that you've got a custom "go to" command, or there is an exit with the alias "beach".

Go to is a command built into the game.
But..., it actually works! Thank you!